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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)
Dispositif pour la mise en marche automatique successive et continue d'une pluralité de disques phonographiques en synchronisme avec un film cinématographique