US PATENT SUBCLASS 169 / 7
.~.~ Automatic

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

5  DF  FLUID SYSTEMS {7}
6  DF  .~ Chemical pressure generating {1}
7.~.~ Automatic {1}
8  DF  .~.~.~> Pressure controlled

DEFINITION

Classification: 169/7

(under subclass 6) Systems, in which the operation occurs automatically in response to fire conditions, such as an abnormal increase of temperature in the region to be protected.