United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 210
rumedto a lever; a pivoted record producing stylusresting normally on the face of the secondphonogram cylinder and fulcrumed to a sec-ond lever with connections between said styles,whereby a duplicate record is made upon theface of the second cylinder, as the two are re-volved—substantially as… … 0 IP i/\AA\\
Phonograph · Patents
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