United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 271
upon 55the disk. 2. A sound modifier for talking-machinescomprising a large and a small disk, a layerof fabric interjDosed between the two disksand the edges of the larger disk being folded 60over upon the smaller disk for connectingthe smaller disk and fabric together. In testimony whereof I affix… … -.1.
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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