US PATENT SUBCLASS 340 / 300
.~.~.~ Lamp at box (e.g., to call patrolman)

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

Internet Version by PATENTEC © 1999      Terms of Use


340 /   HD   COMMUNICATIONS: ELECTRICAL

286.01  DF  SYSTEMS {24}
287  DF  .~ Signal box type (e.g., to call messenger, plural fire alarm boxes) {11}
297  DF  .~.~ With signal at box (e.g., preliminary signal to combat false alarms) {3}
300.~.~.~ Lamp at box (e.g., to call patrolman)

DEFINITION

Classification: 340/300

(under subclass 297) Subject matter in which the signal at the box is a lamp.

(1) Note. The lamp may, for example, be used to notify a policeman on his beat to call in.