United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 225
Jj-vu>&rvto7-> THE NORRIS PETERS CO., PHOTC-LITHO.. WASHINGTON. O. C. 1^132,092. P. HESSELItJS. MANUALLY CONTROLLED PHONOGRAPHIC MECHANISM. APPLIOATIOH FILED FEB. 21, 1914. Patented Mar. 16,1915. 4 SHEETS-SHEET 4. … IruvervtoT7Jret>e>rs Hessefebos Witnesses: JMt f, HR/r. PETERS CO.. PHOTOLITHO.. WASHINGTON. O. • UNITED STATES PATENT OFFICE. PETER HESSELIUS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO ANDERS G. DAHLQUIST, OF CHICAGO, ILLINOIS. MANUALLY-CONTROLLED PHONOGRAPHIC MECHANISM. 1,132,092.…
Phonograph · Patents
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