active element in amplifier being vacuum tube (H03B5/14 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: active element in amplifier being vacuum tube

CPC: active element in amplifier being vacuum tube (H03B5/14 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Generation of oscillations using amplifier with regenerative feedback from output to input > with frequency-determining element comprising lumped inductance and capacitance > active element in amplifier being vacuum tube

CPC:

Generation of oscillations using amplifier with regenerative feedback from output to input (H03B9/00, H03B15/00 take precedence) > with frequency-determining element comprising lumped inductance and capacitance > active element in amplifier being vacuum tube (H03B5/14 takes precedence)

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