US PATENT SUBCLASS 169 / 41
.~ Direct support

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

37  DF  SPRINKLER HEADS {4}
41.~ Direct support

DEFINITION

Classification: 169/41

(under subclass 37), the valve or a member connected to and moving with the valve is supported by a fusible connection directly with the frame.