United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 141
enthe valve is fully telescoped therein. In testimony whereof, I have signed myname to this specification this 27th day ofMarch, 1916. JOSEPH HUNTER DICKINSON. Copies oil this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. SOUND REPRODUCING…
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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