United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 685
ograph record or blank com-posed of a soap hard enough to receive a pol-ished surface from a cutting tool or stylus,but not hard enough to be capable of repro- duction by direct engagement of a reproduc- ing-stylus, substantially as set forth. This specification signed and witnessedthis 28th day of… … Witnesses -4g Walter GfipizrgeoTv, Inventor
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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