majority">Geai-iam, Presiding Judge,

delivered the opinion of the court:

An interference proceeding was instituted in the Patent Office upon the application of the appellant Kennedy, Serial No. 37713, filed June 17, 1925, and an application filed by the appellee Slade, Serial No. 681112, on December 17,1923. Each of these applications sought a patent for an invention relating to the connection of a tractor and a semitrailer in road vehicles, by which connection the same would be joined together to form a single closed body, and particularly to a weather-tight closure between said tractor and trailer by means of which the tractor and trailer might assume any angular movement with respect to each other, and still remain in such condition of closure. The subject matter of the interference is stated in 8 counts, of which counts 1 and 2 are given as illustrative:

1. In a vehicle, two or more articulated units, means on the end of one of said units to receive an adjacent unit and complementary means on said adja*1025cent unit adapted for extended interfitting closure engagement with said first named unit independent of any relative angular movement between said units..

2. In an articulated vehicle whose several sections are connected as to permit relative changes of angularity in all planes, a body closure construction providing interfitting means whereby the several body sections are maintained in weatliertight contact regardless of relative angular changes.

Priority was awarded by both tribunals in the Patent Office to the appellee Slade. The Board of Appeals, in its written decision filed in the case, stated the following:

The record shows that the junior party, Kennedy, had been active in this art for some time; that he established the Kennedy Engineering Corporation for the purpose of building these motor vehicles; and that he had previously filed, on May 24, 1922, an application relating to this general subject matter, as shown by his Exhibit A, which is a copy of the Patent Office drawing in that application. During November, 1923, the party Slade became associated with Kennedy in the enterprise, the two occupying the positions, respectively, of vice president and president of the Kennedy Engineering Corporation. According to the testimony of Kennedy (XQ. 35), he devoted his energies especially to the business end of the organization, while Slade devoted his attention principally to the designing work.

The testimony is to the effect that Kennedy developed his model, Exhibit E, early in January, 1923, and disclosed it to Slade and the other members of the corporation prior to any development by Slade; that the device as designed by Kennedy was considered cumbersome and exceedingly impractical and was followed in a few days by Slade’s development of his spherical closure which, it was agreed by all interested parties, was a superior construction; and that his design was adopted and built into the first coach shown in photograph, Exhibit I, and completed in December, 1923. There is conflicting testimony as to whether Kennedy’s Exhibit F, developed shortly after Kennedy’s Exhibit E, was made before of after Slade’s model. The examiner of interferences held Kennedy had not established that it was made ahead of Slade’s model.

The first and main question for consideration is whether Kennedy’s Exhibit E fairly discloses the issue of the interference. All the counts call for a closure between the two units, or the tractor and semitrailer elements, during angular or vertical and horizontal movements between the two elements. Count 2 distinctly specifies a weather-tight contact, and it is believed that the term “ closure ” in all of the counts implies a weather-tight closure, since this is the very purpose of the invention. We agree with the examiner of interferences that Kennedy’s Exhibit E does not disclose such a closure. A projection of the tractor into tlie opening of the cylinder does not fill the opening but leaves a considerable space above or below it. This space is apparently necessary to permit the ends of the tractor projection to move up and down. (Kennedy’s testimony, p. 10.)

Kennedy’s Exhibit F is an extremely crude pasteboard model showing a somewhat different construction. It does not show a weather-tight closure of the rear end of the tractor with th§ forward end of the trailer, and appears to be no better as evidence of conception of the invention of the issue than Kennedy’s Exhibit E. It therefore is immaterial whether this exhibit was made before or after Slade’s model.

It is further noted that neither of the Exhibits E or F upon which Kennedy relies shows the operator’s seat and control mechanism called for in count *10266, nor the inclosure or compartment for the operator mentioned in counts 5 and 8.

We agree with the examiner of interferences that Kennedy had a conception of the problem of the desirability of doing what the invention is designed to do, but he fails to show any adequate conception of means for accomplishing the result (Herman v. Wulbnan, 1903 C. D., 452, and Meryenthaler v. Scudder, 1897 C. D., 724). It follows that Slade was the first to conceive and the first to reduce to practice, and was rightly entitled to an award of priority by the examiner of interferences.

Another aspect of the case detrimental to Kennedy arises from the fact that he gave up his construction in favor of the Slade construction; that he knew of the filing of the Slade application and of the several steps of its prosecution, and that he collaborated with Slade in the matter. (Kennedy’s testimony, XQs. 57-59.) It appears from the record that he was satsified with this situation as long as lie thought that the Slade application or patent would be assigned to the corporation. Although such an assignment was drawn up for Slade to sign, as shown by Slade’s Exhibit F, he left the corporation and went to Paris without making such an assignment. Kennery was a man of experience in patent matters and he should have known that if he made the broad invention and disclosed it to Slade this should have been embodied in his own instead of in the Slade application. Such a situation is analogous to that in the case of Murphy v. Meissner, 1905 O. D., 592, in which the court said;

It must suffice to say that the question is really not one of priority of invention, but of originality; that the relations of the parties to each other were such that one must have derived the invention from the other; that the appellee shows the earlier conception and reduction to practice; and that the testimony of the principal witness for the appellant shows quite conclusively that the invention belonged to the appellee, and not to the appellant. This witness, who was the person most interested in sustaining the claim of the appellant, testified that the appellee filed his application at the request and solicitation of the witness, and that no other application would have been filed if the appellee had not refused to assign his application to the company which employed him after the application had been filed. And this witness was a man familiar with patents, and had taken out many himself. It can not be supposed that he would have urged the appellee to make the application, if the invention had been really made by his own son, the appellant here.”

As held by the court in that case, these circumstances are believed to show quite conclusively that the senior party is the inventor.

In this statement of law and fact by the Board of Appeals, we concur. It is quite apparent, from this record, that Slade was the inventor of the device which is here in litigation.

Little further comment on the matter is necessary. The appellant argues that Slade’s failure to testify should be taken as a failure to meet the burden of proof which, it is argued, is cast upon him after Kennedy has established a frima facie case of prior invention. This might be true if Kennedy had so established priority. As the Board of Appeals has found, and in which finding we have concurred, Kennedy did not establish such a frima facie case. In fact, the showing made by him, in our opinion, fully establishes that Slade was the inventor and not he.

The decision of the Board of Appeals is affirmed.

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