US PATENT SUBCLASS 246 / 157
.~.~.~.~.~ Electric

Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

131  DF  INTERLOCKING {8}
143  DF  .~ Manual actuation {3}
147  DF  .~.~ Mechanical locking {5}
155  DF  .~.~.~ Rod-saving devices {2}
156  DF  .~.~.~.~ Selectors {1}
157.~.~.~.~.~ Electric

DEFINITION

Classification: 246/157

(under subclass 156) Subject matter actuated or controlled by electrical means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5, 156, 164, and 165, for selective mechanism.

SEE OR SEARCH CLASS

340, Communications: Electrical,

825+, for electric selective-signaling systems of general application.