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H01J 21/34

Tubes with electrode system arranged or dimensioned so as to eliminate transit-time effect (with flat electrodes H01J21/36)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Tubes with electrode system arranged or dimensioned so as to eliminate transit-time effect

CPC: Tubes with electrode system arranged or dimensioned so as to eliminate transit-time effect (with flat electrodes H01J21/36)

Full Title

Full titles differ between systems:

IPC:

Vacuum tubes > Tubes with electrode system arranged or dimensioned so as to eliminate transit-time effect

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 electrode system arranged or dimensioned so as to eliminate transit-time effect (with flat electrodes H01J21/36)

No child classifications to compare. This is a leaf node in both IPC and CPC.