Inventor
TACHIBANA SADAO
JP6 patents
Patents
6 patentsUS5914468AJun 22, 1999
Keyboard unit and key switch
OKI ELECTRIC IND CO LTD21 citations89
US4927990AMay 22, 1990
Spring-biased push-button switch having a spring-loaded tactile feedback feature
OKI ELECTRIC IND CO LTD30 citations89
US4851618AJul 25, 1989
Keyboard
OKI ELECTRIC IND CO LTD31 citations87
US5256843AOct 26, 1993
Keyboard switch and method of manufacturing the same
OKI ELECTRIC IND CO LTD20 citations79
US4874913AOct 17, 1989
Luminous element holding structure for an illuminated key switch
OKI ELECTRIC IND CO LTD19 citations72
US4837412AJun 6, 1989
Keyboard of a membrane contact type
OKI ELECTRIC IND CO LTD6 citations60