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G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
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FR1180272D1957-07-291957-07-29Appareil pour la mesure de différence de pression
ExpiredFR1180272A
(fr)