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F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16J—PISTONS; CYLINDERS; SEALINGS
F16J3/00—Diaphragms; Bellows; Bellows pistons
F16J3/02—Diaphragms
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Mechanical Engineering
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FR826491D1937-09-091937-09-09Perfectionnements aux vannes et détendeurs
ExpiredFR826491A
(fr)