IPC Subgroup
H01J 17/48 with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
Introduced: September 1968
Last revised: January 2006
Full Title
Gas-filled discharge tubes with solid cathodes > Cold-cathode tubes > with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
Related Keywords
discharge tubes for COUNTINGDEKATRONS
1 direct subcode
Child Classifications
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- H01J 17/49 Display panels, e.g. with crossed electrodes