US PATENT SUBCLASS 169 / 69
.~ For oil or gas well


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

54  DF  SPECIAL APPLICATIONS {9}
69.~ For oil or gas well


DEFINITION

Classification: 169/69

(under subclass 54) Apparatus for extinguishing or preventing fires at the outlet of a subterranean source of an inflammable fluid.

SEE OR SEARCH CLASS

166, Wells,

75.11+, especially subclasses 79.1 and 90.1 for well apparatus combined with fire extinguishers where the fire extinguishing feature goes no further than a mere cap or head, means for diverting flow from the well or means for inserting a fluid into the well, or where more of the well is claimed than cooperates with the fire extinguishing means.