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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
F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
F16J9/10—Special members for adjusting the rings
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FR713790D1930-11-101931-03-24Perfectionnements aux anneaux ou segments de garniture pour pistons
ExpiredFR713790A
(fr)