Inventor
OOYAMA MITSUHIRO
3 patents
Patents
3 patentsUS4168455ASep 18, 1979
Motor speed control system
YAMAMOTO ELECTRIC IND CO LTD17 citations70
US4143605AMar 13, 1979
Motor driven sewing machine
YAMAMOTO ELECTRIC IND CO LTD4 citations59
US4142472AMar 6, 1979
Control apparatus for an electrically driven sewing machine with stitch pattern producing device
YAMAMOTO ELECTRIC IND CO LTD4 citations59