DIFF Main Group
H04B 3/00 Line transmission systems (combined with near-field transmission systems H04B5/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Line transmission systems
CPC: Line transmission systems (combined with near-field transmission systems H04B5/00)
Full Title
Full titles differ between systems:
IPC:
Line transmission systems
CPC:
Line transmission systems (combined with near-field transmission systems H04B5/00)
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H04B 3/50 Systems for transmission between fixed stations via two-conductor transmission lines (H04B3/54 takes precedence) IPC+CPC Available in IPC and CPC
- H04B 3/52 Systems for transmission between fixed stations via waveguides IPC+CPC Available in IPC and CPC
- H04B 3/54 Systems for transmission via power distribution lines +4 CPC IPC+CPC Available in IPC and CPC
- H04B 3/60 Systems for communication between relatively movable stations, e.g. for communication with lift (H04B3/54 takes precedence) IPC+CPC Available in IPC and CPC