US PATENT SUBCLASS 361 / 189
.~.~ Plural switches in control circuit

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

139  DF  CONTROL CIRCUITS FOR ELECTROMAGNETIC DEVICES {7}
160  DF  .~ For relays or solenoids {11}
189.~.~ Plural switches in control circuit {1}
190  DF  .~.~.~> Including electronic switch

DEFINITION

Classification: 361/189

Plural switches in control circuit:

(under subclass 160) Subject matter wherein more than one switch is included in the control circuit, all of which must be operated to initiate the operation of the relay.