Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H04L 27/16

Frequency regulation arrangements

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Modulated-carrier systems > Frequency-modulated carrier systems, i.e. using frequency-shift keying > Frequency regulation arrangements

CPC:

Modulated-carrier systems > Frequency-modulated carrier systems, i.e. using frequency-shift keying (H04L27/32 takes precedence) > Frequency regulation arrangements

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