United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 625
ar-ing surface, forming thereon a sulfid of themetal whereof said surface is composed, elec-trodepositing a metallic layer thereon, andseparating the two metallic bodies. In testimony whereof I have signed thisspecification in the presence of two subscrib-ing witnesses. THOMAS H. MACDONALD.… … ckvuc-fvto-i ^ « SWitvu vb\s L /: /!*^ _ ^r_5? a«o x vi c w THK MOffRIS P£TC«C&, WASHINGTON. D C. No. 836,940. PATENTED NOV. 27, 1906.C. W. NOYES.PHONOGRAPH. APPLICATION PILED DEO. 16, 1903. BENEWED OOT. 17, 1906. 3 SHEETS-SHEET 2
Phonograph · Patents
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