US PATENT SUBCLASS 313 / 422
.~.~ Flat tube type

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

Internet Version by PATENTEC © 1999      Terms of Use


313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

364  DF  CATHODE RAY TUBE {11}
421  DF  .~ Beam deflecting means {7}
422.~.~ Flat tube type

DEFINITION

Classification: 313/422

(under subclass 421) Subject matter wherein the deflection is greater than 110 degree or the cathode ray is asymmetrically deflected.

(1) Note. The general purpose of these tubes is to minimize the front to back dimension.