by means of discharge tubes having more than two electrodes (H03D7/14 - H03D7/22 take precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: by means of discharge tubes having more than two electrodes

CPC: by means of discharge tubes having more than two electrodes (H03D7/14 - H03D7/22 take precedence)

Full Title

Full titles differ between systems:

IPC:

Transference of modulation from one carrier to another, e.g. frequency-changing > by means of discharge tubes having more than two electrodes

CPC:

Transference of modulation from one carrier to another, e.g. frequency-changing (H03D9/00, H03D11/00 take precedence; dielectric amplifiers, magnetic amplifiers, parametric amplifiers used as a frequency-changers H03F) > by means of discharge tubes having more than two electrodes (H03D7/14 - H03D7/22 take precedence)

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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H03D 7/08 the signals to be mixed being applied between the same two electrodes IPC+CPC Available in IPC and CPC
H03D 7/10 the signals to be mixed being applied between different pairs of electrodes IPC+CPC Available in IPC and CPC