Inventor

SHIRAGA CHITOSHI

3 patents

Patents

3 patents

US4091891AMay 30, 1978

Horn speaker

ONKYO KK57 citations93

US3972385AAug 3, 1976

Horn speaker

ONKYO KK20 citations79

US4040503AAug 9, 1977

Horn speaker

ONKYO KK17 citations70