US PATENT SUBCLASS 307 / 65
.~.~ Plural substitute sources

Current as of: June, 1999
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307 /   HD   ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS

43  DF  PLURAL SUPPLY CIRCUITS OR SOURCES {14}
64  DF  .~ Substitute or emergency source {3}
65.~.~ Plural substitute sources

DEFINITION

Classification: 307/65

(under subclass 64) Subject matter having plural substitute sources.

(1) Note. The plural substitute sources, for example, may be provided with means for making them effective in a predetermined sequence.