US PATENT SUBCLASS 307 / 68
.~.~ Dynamoelectric


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}
68.~.~ Dynamoelectric


DEFINITION

Classification: 307/68

(under subclass 64) Subject matter in which the substitute or emergency source is a dynamoelectric source.

(1) Note. The dynamoelectric source, for example, may be supplied with an inertia type massive flywheel and normally act as a motor across the line to supply current, as a generator, when the normal voltage supply is interrupted.

SEE OR SEARCH THIS CLASS, SUBCLASS:

44+, for this subject matter. Note especially indented subclass 47.