US PATENT SUBCLASS 169 / 40
.~ Lever

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

37  DF  SPRINKLER HEADS {4}
40.~ Lever

DEFINITION

Classification: 169/40

(under subclass 37) The valve, is supported by a lever or system of levers which communicate the thrust of the valve to the frame at two or more separated points.