United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 781
ent of the second arm, a cam car-ried by said second arm and tending to ele-vate the bar, a spring for actuating the cam,a second arm, and means for returning thesound-box carriage to initial position. In testimony that I claim the foregoing asmy own I have hereto affixed my signaturein the…
Phonograph · Patents
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