US PATENT SUBCLASS 252 / 951
.~ For vapor transport


Current as of: June, 1999
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252 /   HD   COMPOSITIONS

950  DF  DOPING AGENT SOURCE MATERIAL {1}
951.~ For vapor transport


DEFINITION

Classification: 252/951

(under subclass 950) Materials designed for conveying the foreign substance as a gas or vapor or entrained in a gas vapor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

181.1+, for getters or gas vapor generating materials for electric lamps, electric space discharge devices and similar devices.