United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 515
hment for phonographscomprising a threaded arm connected withthe recording-arm, an arm projecting fromthe rod and having threaded engagement 50therewith, a stem depending from said arm,and a brush frictionallv engaging the lowerend of said stem. In testimony whereof I have affixed mysignature in… … WITNESSES: MENTOR:
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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