United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 541
of metallic mag-nesium and united to a circumferential sec-tion of small area composed of materialhaving greater pliability than magnesiumand which is adapted to operate as a hinge 85under the movements of the diaphragm, sub-stantially as set forth. This specification signed and witnessedthis 20th… … J7C/6 6--- .^^ 1 aiaasaisiaBia^
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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