IPC Subgroup
H01K 1/54 Means for adsorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
Introduced: September 1968
Last revised: January 2006
Full Title
Details > Means for obtaining or maintaining the desired pressure within the vessel > Means for adsorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC INCANDESCENT LAMPS
Related Keywords
GETTERING in electric incandescent lamps
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- H01K 1/56 characterised by the material of the getter