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G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
G01P13/00—Indicating or recording presence, absence, or direction, of movement
G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
G01P13/0066—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using differences of pressure in the fluid
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FR34343D1927-09-141927-09-14Appareil de signalisation de l'état de stagnation ou d'écoulement d'un fluide dans une conduite
ExpiredFR34343E
(fr)
Appareil pour le réglage de la circulation d'un fluide dans un circuit fermé ou une conduite, utilisable notamment pour les installations de chauffage