United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 117
euntosigned my name at Philadelphia, Pennsyl-vania, this twentv-seventh day of April,1912. JOSEPH M. McCALLIE. Witnesses: James H. Bell, E. L. FlJLLERTON. 25 30 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. ATTACHMENT FOR…
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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