United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 287
ng a supporting spring extending 30transversely to the plane of the diaphragm,and the stylus bar acting on the diaphragmand connected with said looped wire betweenthe points of support thereof and beingwholly sustained and supported by said wire 35and the diaphragm. In testimony of which invention,… … J^fp.J
Phonograph · Patents
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