US PATENT SUBCLASS 246 / 178
.~.~ Electric or magnetic control

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

Internet Version by PATENTEC © 1999      Terms of Use


246 /   HD   RAILWAY SWITCHES AND SIGNALS

167 R  DF  CAB SIGNAL OR TRAIN CONTROL {20}
177  DF  .~ Block entrance initiated {1}
178.~.~ Electric or magnetic control {3}
179  DF  .~.~.~> Bridged insulated rail joint
180  DF  .~.~.~> Cab-circuit controller
181  DF  .~.~.~> Mechanical actuation

DEFINITION

Classification: 246/178

(under subclass 177) Subject matter where the control devices are of an electric or magnetic nature.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167, and all subclasses mentioned in the search notes appended thereto, for cab and control features.