US PATENT SUBCLASS 313 / 642
.~.~.~.~ And rare gas

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

567  DF  WITH GAS OR VAPOR {24}
637  DF  .~ With particular gas or vapor {2}
638  DF  .~.~ With metal vapor {1}
639  DF  .~.~.~ Mercury vapor {2}
642.~.~.~.~ And rare gas

DEFINITION

Classification: 313/642

And rare gas:

(under subclass 639) Subject matter wherein the composition includes a rare gas.