CPC Subgroup
H04L 13/16 of transmitters, e.g. code-bars, code-discs
Full Title
Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 > of transmitters, e.g. code-bars, code-discs
H04L 13/16 Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 > of transmitters, e.g. code-bars, code-discs