CPC Subgroup Additional Only
H01J 2893/0033 Vacuum connection techniques applicable to discharge tubes and lamps
Full Title
Discharge tubes and lamps > Vacuum connection techniques applicable to discharge tubes and lamps
5 direct subcodes
Child Classifications
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- H01J 2893/0034 Lamp bases
- H01J 2893/0037 Solid sealing members other than lamp bases
- H01J 2893/0045 Non-solid connections, e.g. liquid or rubber
- H01J 2893/0046 Lamp base with closure
- H01J 2893/0047 Closure other than lamp base