US PATENT SUBCLASS 252 / 181.4
.~.~ Containing magnesium, alkali-metal and alkaline-earth metal, or compound thereof

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}
181.3  DF  .~ Reactive compositions {1}
181.4.~.~ Containing magnesium, alkali-metal and alkaline-earth metal, or compound thereof

DEFINITION

Classification: 252/181.4

(under subclass 181.3) Materials which contain magnesium, an alkali metal or an alkaline earth metal, or a compound thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

181.7, for other materials under subclass 181.1 which contain magnesium, an alkali metal, an alkaline earth metal or a compound thereof.