US PATENT SUBCLASS 429 / 53
MEANS EXTERNALLY RELEASING INTERNAL GAS PRESSURE FROM CLOSED CELL, I.E., VALVE ETC.

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

53MEANS EXTERNALLY RELEASING INTERNAL GAS PRESSURE FROM CLOSED CELL, I.E., VALVE ETC. {2}
54  DF  .~> Elastic, resilient or spring biasing valve means {1}
56  DF  .~> Blowout type

DEFINITION

Classification: 429/53

(under the class definition) Apparatus having means to release an internal gas pressure to the exterior of a closed cell.