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B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
B66F3/25—Constructional features
B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
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FR44224D1933-12-011933-12-01Perfectionnements apportés aux vérins ou crics hydrauliques, notamment à ceux pour véhicules automobiles
ExpiredFR44224E
(fr)