(1) An issuer may register any coupon bond registrable as to principal upon the request of the owner or holder. Thereafter, no transfer shall be valid unless the transfer is entered on the records of the issuer and similarly noted on the bond, and the bond may be discharged from registration by being in like manner transferred to bearer and thereupon the bond may be transferred by delivery.
(2) Registration of a coupon bond as to principal does not affect the negotiability of the appertaining coupons. A negotiable coupon is transferable by delivery whether or not the principal of the bond to which it appertains is registered.
(3) A reasonable fee may be charged as compensation for the expense of this registration.