US PATENT SUBCLASS 307 / 130
.~.~.~ Voltage

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

112  DF  SWITCHING SYSTEMS {5}
116  DF  .~ Condition responsive {4}
125  DF  .~.~ Electrical {6}
130.~.~.~ Voltage

DEFINITION

Classification: 307/130

(under subclass 125) Subject matter in which the electrical condition to which the system is automatically responsive is voltage.

SEE OR SEARCH CLASS

323, Electricity: Power Supply or Regulation Systems,

220, 303 for voltage magnitude control systems automatically responsive to voltage.

361, Electricity: Electrical Systems and Devices,

88+, for voltage responsive safety and protective systems, such as low voltage tripping systems.