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PCE
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DIFF Subgroup
H03B 7/04

active element being vacuum tube

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Generation of oscillations using active element having a negative resistance between two of its electrodes > with frequency-determining element comprising lumped inductance and capacitance > active element being vacuum tube

CPC:

Generation of oscillations using active element having a negative resistance between two of its electrodes (H03B9/00 takes precedence) > with frequency-determining element comprising lumped inductance and capacitance > active element being vacuum tube

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