US PATENT SUBCLASS 48 / 193
.~ Leakage

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

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

DEFINITION

Classification: 48/193

Means for detecting and providing for the escape of leakage gas from mains.

SEE OR SEARCH CLASS

73, Measuring and Testing,

40.5, for positively creating a condition to produce leakage of defective mains.

252, Compositions,

68, 299.01+ and 408.1 for gas leak testing compositions.