United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 331
said inter-lineations; a vibratory arm mounted on theopposite end of said rod; and disconnected 55means for audibly reproducing the vibra-tions caused by the engagement between saidneedle and said interlineations. In testimony whereof I have hereunto setmy hand this 10th day of February, A. D.…
Phonograph · Patents
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