US PATENT SUBCLASS 49 / 137
UNITARY OR INTERRELATED FLUID OPERATOR AND CLOSURE CHECK

Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

137UNITARY OR INTERRELATED FLUID OPERATOR AND CLOSURE CHECK

DEFINITION

Classification: 49/137

(under the class definition) Device provided with a fluid driven operator, said operator including additional fluid means which cushions the closure movement as it approaches its open or closed position.