United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 777
ubber gaskets and the dia-phragm and a second paper gasket havinga flanged margin, interposed between thesecond rubber gasket and the diaphragmand ha^dng its flanged portion interposedbetAveen the edge of the diaphragm and thesound box body, substantially as set forth. This specification sig-ned…
Phonograph · Patents
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