US PATENT SUBCLASS 137 / 78.5
.~ Atmospheric


Current as of: June, 1999
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137 /   HD   FLUID HANDLING

78.1  DF  AMBIENT CONDITION CHANGE RESPONSIVE {4}
78.5.~ Atmospheric {2}
79  DF  .~.~> Temperature {1}
81.1  DF  .~.~> Pressure


DEFINITION

Classification: 137/78.5

Atmospheric:

(under subclass 78.1) Apparatus in which control of a flow of fluid is responsive to a variation in a condition of, or in surrounding atmosphere.