US PATENT SUBCLASS 48 / 194
.~.~ Preventing

Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

190  DF  DISTRIBUTION {3}
193  DF  .~ Leakage {2}
194.~.~ Preventing

DEFINITION

Classification: 48/194

Means for preventing the leakage of gas from the mains at their couplings.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings,

13+, for a coupling combined with leakage disposal means, and

subclasses 148.6+ for compound joints. See the Search Notes thereunder.