US PATENT SUBCLASS 204 / FOR 921
.~ Internal battery (204/197)

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

FOR 920  DF  ELECTROLYTIC OBJECT PROTECTION APPARATUS (204/196) {1}
FOR 921.~ Internal battery (204/197)

DEFINITION

Classification: 204/FOR.921

Internal battery:

Foreign art collection under collection FOR920 in which the anti-electrolysis device includes means for creating an internal battery action within or upon the object being protected.

SEE OR SEARCH THIS CLASS, SUBCLASS:

248+, for other internal battery electrolytic cells which are not used for object protection.