04150262 is referenced by 203 patents and cites 11 patents.

A voice sound transmitting and receiving apparatus suitable for the use under noisy circumstances and designed to be inserted into the external auditory canal of a user for attaining the voice sound transmitting and receiving operation using the vibrations of the external auditory canal wall.

Title
Piezoelectric bone conductive in ear voice sounds transmitting and receiving apparatus
Application Number
632945
Publication Number
4150262
Application Date
April 21, 1977
Publication Date
April 17, 1979
Inventor
Hiroshi Ono
No. 10-15, Koyama 7-chome, Shinagawa-ku, Tokyo
JP
Agent
Frank J Jordan
IPC
H04M 1/03
H04R 25/02
H04R 1/46
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