US PATENT SUBCLASS 318 / 441
.~ A.C. and D.C.

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

440  DF  HAVING PLURAL, DIVERSE OR DIVERSELY CONTROLLED SOURCES {2}
441.~ A.C. and D.C.

DEFINITION

Classification: 318/441

(under subclass 440) Subject matter in which one or more of the sources are an alternating current type of source and one or more others of which are a direct current type of source.

(1) Note. A pulsating source in which the instantaneous polarity never reverses is classified as a direct current source.

SEE OR SEARCH THIS CLASS, SUBCLASS:

107, for plural motor systems having AC and DC sources of supply.