DIFF Subgroup
H03C 7/02 in transmission lines, waveguides, cavity resonators or radiation fields of antennas
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Modulating electromagnetic waves > in transmission lines, waveguides, cavity resonators or radiation fields of antennas
CPC:
Modulating electromagnetic waves (devices or arrangements for the modulation of light G02F1/00) > in transmission lines, waveguides, cavity resonators or radiation fields of antennas
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open