Diagnosis, testing or measuring for television systems or their details

Introduced: January 1985

CPC subdivides this area 2x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1985.

Child Classifications

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H04N 17/002 CPC only CPC only
H04N 17/004 CPC only CPC only
H04N 17/02 for colour television signals since 1985 IPC+CPC Available in IPC and CPC
H04N 17/04 for receivers since 1985 +1 CPC IPC+CPC Available in IPC and CPC
H04N 17/06 for recorders since 1985 IPC+CPC Available in IPC and CPC
H04N 2017/006 2nd only CPC only CPC only
H04N 2017/008 2nd only CPC only CPC only

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

Class H04,2013–2023, worldwide · Source: EPO PATSTAT