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F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
FR35804D1928-08-171928-08-17
Improvements to clutch devices
ExpiredFR35804E
(en)