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Inventor
MATSUSHIMA TATSUO
JP
2 patents
Patents
2 patents
US4152930A
May 8, 1979
Torque-measuring device
KOYO SEIKO CO
9 citations
68
US6020585A
Feb 1, 2000
Optical rotary encoder having at least one zone plate
KOYO SEIKO CO
3 citations
48