United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 267
ntiallv as set forth. 60 3. As a new manufacture, a duplicatesound i-ecord made of a nitro derivative ofcellulose, having homogeneous and non-laminated walls, and with a cast sound rec-ord on its exterior, substantially as set forth. 65 This specification signed and witnessedthis 2nd day of June… … J^ cJ^^.^*.
Phonograph · Patents
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