US PATENT SUBCLASS 429 / 25
.~.~ Pressure dependent

Current as of: June, 1999
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429 /   HD   CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS

12  DF  FUEL CELL, SUBCOMBINATION THEREOF OR METHODS OF OPERATING {10}
22  DF  .~ Automatic control means {3}
25.~.~ Pressure dependent

DEFINITION

Classification: 429/25

(under subclass 22) Apparatus wherein the control is responsive to pressure.