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G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
G01P11/00—Measuring average value of speed
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FR620336D1925-12-211925-12-21Principe et dispositif pour la lecture directe, d'une façon continue, de la vitesse moyenne d'un mobile
ExpiredFR620336A
(fr)