US PATENT SUBCLASS 169 / 90
.~ Shut off valve

Current as of: June, 1999
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169 /   HD   FIRE EXTINGUISHERS

37  DF  SPRINKLER HEADS {4}
90.~ Shut off valve

DEFINITION

Classification: 169/90

(under subclass 37) Apparatus further comprising a means for selectively terminating discharge from the sprinkler head.