United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 670
)ressed by the weight of said aiininto contact witli the said master i-ecord andblank, resi^ectivelj^, the fulcniui of said levoibeing at the intersection of tangent linesdrawn respeetivelj from the points of the re-corder and reproducer, substantially^ as de-scribed. In testimony whereof I have… … yVtlnesses
Phonograph · Patents
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