United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 797
tion with a horn having its induction and H. B. Boss, eduction ports at the remote extremities of Jno. G. Powell. Copies of thii patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D, C. ^liKftrttJ.PHUiMIi. FATi!iWTj l,3b3,blb SOUND REPRODUCING… … Ivi ! ii c.v
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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