US PATENT SUBCLASS 92 / 21 MR
.~.~ Manual release

Current as of: June, 1999
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92 /   HD   EXPANSIBLE CHAMBER DEVICES

15  DF  WITH RELEASABLE STOP OR LATCH MEANS TO PREVENT MOVEMENT OF WORKING MEMBER {8}
21 R  DF  .~ Plural selectively operable actuators for releasable means {1}
21 MR.~.~ Manual release

Unofficial Alpha Subclasses: R MR

DEFINITION

Classification: 92/21

(under subclass 15) Apparatus in which the movement preventing means is movable either to engage or disengage position by two or more separate means, said means being distinct from each other and being operable independently of each other.