United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 311
estimony whereof I have signed myname to this specification in the presence of 30two subscribing witnesses. FREDERIC W. THOMAS. Witnesses: Chatten Bradwat,George H. Emslte. (• Copies of this patent may be obtained for five cents each, by addressing the Washington, D. C. Commissioner of Patents,… … 14 16 7 15 n <§>
Phonograph · Patents
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