US PATENT SUBCLASS 251 / 335.3
.~ Bellows

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

335.1  DF  HERMETIC FLEXIBLE WALL SEAL FOR ACTUATOR {2}
335.3.~ Bellows

DEFINITION

Classification: 251/335.3

Bellows:

(under subclass 335.1) Subject matter wherein the sealing means comprises and annular pleated expansible and contractible member.