H04B 1/662
Details of transmission systems, not covered by a single one of groups [CPC: H04B3/00] - [CPC: H04B13/00]; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission {using a time/frequency relationship, e.g. time compression or expansion}
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Edits on 5 Mar, 2022
Golden AI
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H04B 1/662
Details of transmission systems, not covered by a single one of groups [CPC: H04B3/00] - [CPC: H04B13/00]; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission {using a time/frequency relationship, e.g. time compression or expansion}
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