United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 679
aself-sustaining body composed of celluloidand shellac. 6. A sound-record consisting of a tabletcomposed of shellac and the ingredients ofcelluloid and having irregularities correspond-ing to sound-waves formed therein. In testimony whereof I have signed thisspecification in the presence of two… … Attest:
Phonograph · Patents
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![An illustration from [Graphophone patents], 1878, leaf 679](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten07unit-679-436.webp)
