United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 389
poses setforth. 10. A composite record, comprising anouter layer formed of a composition em-ploying asphalt, stearate of lead and a resin 50gum, and an inner layer employing stearate of soda, substantially as and for the pur-poses set forth. This specification signed and witnessedthis 3rd day of… … J7^.2. 2 J-
Phonograph · Patents
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