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PCE
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DIFF Subgroup
H04H 20/81

combined with telephone network over which the broadcast is continuously available

Introduced: January 2008

Full Title

Arrangements for broadcast or for distribution combined with broadcast > Arrangements characterised by transmission systems for broadcast > Wired systems > using carrier waves > combined with telephone network over which the broadcast is continuously available

No child classifications to compare. This is a leaf node in both IPC and CPC.