Tubes with a single discharge path

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Vacuum tubes > Tubes with a single discharge path

CPC:

Vacuum tubes (H01J25/00, H01J31/00 - H01J40/00, H01J43/00, H01J47/00, H01J49/00 take precedence; details of vacuum tubes H01J19/00) > Tubes with a single discharge path

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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H01J 21/04 without control means, i.e. diodes IPC+CPC Available in IPC and CPC
H01J 21/06 having electrostatic control means only +1 CPC IPC+CPC Available in IPC and CPC
H01J 21/18 having magnetic control means; having both magnetic and electrostatic control means IPC+CPC Available in IPC and CPC