United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 219
the valveand the other disposed in attractive relation to the core. 70 In testimony that I claim the foregoingas my own, I have hereto affixed my signa-ture. HARRISON W. ROGERS. Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.… … /S 20 21 Jl#2.
Phonograph · Patents
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