US PATENT SUBCLASS 429 / 55
.~.~ Elastic band or O-ring valve member

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

53  DF  MEANS EXTERNALLY RELEASING INTERNAL GAS PRESSURE FROM CLOSED CELL, I.E., VALVE ETC. {2}
54  DF  .~ Elastic, resilient or spring biasing valve means {1}
55.~.~ Elastic band or O-ring valve member

DEFINITION

Classification: 429/55

(under subclass 54) Apparatus having an elastic band or O-ring in the valve structure.