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G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
G01P3/02—Devices characterised by the use of mechanical means
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FR20692D1915-05-251918-01-02Indicateur périodique de vitesse pouvant etre combiné avec un indicateur de temps et un compteur et un totalisateur
ExpiredFR20692E
(fr)