US PATENT SUBCLASS 252 / 181.2
.~ Plural getter and/or gas or vapor generating materials


Current as of: June, 1999
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252 /   HD   COMPOSITIONS

181.1  DF  GETTERS OR GAS OR VAPOR GENERATING MATERIALS FOR ELECTRIC LAMPS, ELECTRIC SPACE DISCHARGE DEVICES, AND SIMILAR DEVICES {4}
181.2.~ Plural getter and/or gas or vapor generating materials


DEFINITION

Classification: 252/181.2

(under subclass 181.1) Materials which contain either (1) a plurality of getter substances, (2) a plurality of materials capable of generating two or more different gases or vapors, or (3) a material capable of generating a gas or vapor and a different material capable of acting as a getter.

(2) Note. As many getter and gas or vapor generating materials contain two or more ingredients, classification in this subclass depends principally upon the disclosure of the

patent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

181.1+, for the case where there is only a single gas or vapor generated and such gas or vapor is capable of acting as a getter as well as being capable of supplying a gas or vapor.