Langmuir v. De Forest’s Empirical Analysis
18 F.2d 345 · 1927
Citation profile
1 federal appellate · 2 district ·
How this case has been cited
Cited by 6 later decisions — most recently July 1941
1 federal appellate · 2 district ·
Later decisions citing this case, by decade. The current decade is in progress, and our corpus holds fewer opinions from the most recent years, so the latest bars are undercounted — not a real decline.
Relationships
Relies on Western Electric Co. v. LaRue · Gandy v. Marble · Frederick R. Stearns & Co. v. Russell · Stow v. Chicago · W. W. Sly Mfg. Co. v. Russell & Co.
Most-quoted passages
The sentences later courts lift from this opinion, ranked by how many decisions quote each — the parts of the opinion doing the work. These counts are smaller than the citation total above because most of the 6 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
““Nor is the introductory clause, ‘in a radio signaling system,’ an element of the combination set out in the claims. Moreover, it does not convert the claims into applications of the feed-back circuit to a radio signaling system. Claims so limited constituted the subject-matter of interference No. 41,223 between Langmuir and Armstrong, in which the latter prevailed. It does not limit the invention defined by the actual combination claimed.””
1 later decision quote this exact passage · from the majoritye.g. Braren v. Horner
How this case has been treated — in progress
Whether each later court followed, distinguished, criticized, or overruled this decision. The treatment classification (task #35) runs highest-cited cases first and lights up here as it reaches this one.