DIFF Subgroup
H03C 3/22 the element being a semiconductor diode, e.g. varicap diode
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Angle modulation > by means of variable impedance > by means of a variable reactive element > the element being a semiconductor diode, e.g. varicap diode
CPC:
Angle modulation (H03C5/00, H03C7/00 take precedence) > by means of variable impedance (H03C3/30 - H03C3/38 take precedence) > by means of a variable reactive element > the element being a semiconductor diode, e.g. varicap diode
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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