US PATENT SUBCLASS 361 / *
.~ With specific voltage responsive fault sensor (361/88)

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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

*  DD  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES (361/1) {1}
*.~ With specific voltage responsive fault sensor (361/88) {1}
FOR 100  DF  .~.~> Overvoltage (361/91)