United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 651
d extensions. 25 In testimony whereof, I have hereuntosubscribed mv name. PATRICK B. DELANY. 6«9t«* «f this patent may fee obtained for five cents each, \>j addressing the Commissioner of Patents, Washington, D. C. \ *jrii.n t uu . nwiiiii i j^ j. ijin j. / SOUND CONVEYOR FOR TALKING MACHINES.…
Phonograph · Patents
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