Inventor

IWASAKI HIKOJI

4 patents

Patents

4 patents

US4742328AMay 3, 1988

Audio and visual alarm device

KOBISHI ELECTRIC CO LTD16 citations72

US4599498AJul 8, 1986

Tamper switch

KOBISHI ELECTRIC CO LTD12 citations70

US4075626AFeb 21, 1978

Alarm buzzer

KOBISHI ELECTRIC CO LTD14 citations70

US4692741ASep 8, 1987

Motor actuated buzzer assembly with a plurality of leaf springs of different frequencies

KOBISHI ELECTRIC CO LTD3 citations60