Inventor

MARUTAKE YOZO

4 patents

Patents

4 patents

US5010575AApr 23, 1991

Audio current pick-up device

RION CO57 citations91

US4489330ADec 18, 1984

Electromagnetic induction coil antenna

RION CO68 citations90

US4361733ANov 30, 1982

Hard-of-hearing aid appliance

RION CO12 citations68

US4354061AOct 12, 1982

Sensing coil in hearing aid

RION CO0 citations45