US PATENT SUBCLASS 324 / 407
.~.~ Testing circuit for diverse-type tube

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

Internet Version by PATENTEC © 1999      Terms of Use


324 /   HD   ELECTRICITY: MEASURING AND TESTING

403  DF  ELECTRIC LAMP OR DISCHARGE DEVICE {3}
405  DF  .~ Vacuum tube {5}
407.~.~ Testing circuit for diverse-type tube

DEFINITION

Classification: 324/407

Testing circuit for diverse-type tube:

(under subclass 405) Subject matter wherein the testing system or apparatus is provided with means so that two or more types of vacuum tubes may be tested by the same apparatus or system.

SEE OR SEARCH CLASS

315, Electric Lamp and Discharge Devices: Systems,

178+, and the subclasses specified in the notes to the definitions of these subclasses for miscellaneous systems for operating a plurality of diverse-type load devices.