United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 249
roducer having asound box, a diaphragm inclosed therein, aspider, and a plurality of reproducingstyluses associated with said spider, the re-spective styluses being adapted to cooperate 115with plane and curvilinear records. In testimony whereof I have hereuntosigned my name in the presence of two… … ^^ .^. Svfucwtot I ^e.**^^ UNITED STATES PATENT OFFICE. BOBEBT A. BOSWELL, OF WASHINGTON, DISTRICT OF COLUMBIA.SOUND-CONVEYING TUBE FOR TALKING-MACHINES. 951,998. Specification of Letters Patent. Patented Mar. 15, 1910. Application filed August 3, 1909. Serial No. 511,043. To all whom it may…
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