DIFF Subgroup
H03B 9/12 using solid state devices, e.g. Gunn-effect devices
Introduced: July 1974
Full Title
Generation of oscillations using transit-time effects > using solid state devices, e.g. Gunn-effect devices
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
IPC defines codes here since 1980.
Child Classifications
Navigate with arrow keys, Enter to open
- H03B 9/14 and elements comprising distributed inductance and capacitance since 1980 +6 CPC IPC+CPC Available in IPC and CPC