United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 343
ubstantially 65as set forth. 12. A tubular mold com])rising an innercylindrical shell extending inwardly at oneend, a C3dindrical backing surrounding saidshell and a ring covering the bottom of said 73shell and secured to the backing, .substan-tially as set forth. This specification signed and… … ■zo ■ WITNESSES; ^^ /? ili-l^/-?
Phonograph · Patents
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