US PATENT SUBCLASS 340 / 815.89
.~.~ Circuit closing type

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

815.4  DF  VISUAL INDICATION {18}
815.83  DF  .~ Movable {5}
815.89.~.~ Circuit closing type

DEFINITION

Classification: 340/815.89

Circuit closing type:

(under subclass 815.83) Subject matter having means to close a switching or a contacting device of a normally open circuit when the signalling device moves.