DIFF Main Group
H04B 13/00 Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
Introduced: September 1968
Title
Titles differ between systems:
IPC: Transmission systems characterised by the medium used for transmission, not provided for in groups
CPC: Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
Full Title
Full titles differ between systems:
IPC:
Transmission systems characterised by the medium used for transmission, not provided for in groups
CPC:
Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- H04B 13/02 Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy IPC+CPC Available in IPC and CPC