Transversal filters (electromechanical filters H03H9/46, H03H9/70)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Transversal filters

CPC: Transversal filters (electromechanical filters H03H9/46, H03H9/70)

Full titles differ between systems:

IPC:

Transversal filters

CPC:

Transversal filters (electromechanical filters H03H9/46, H03H9/70)

CPC subdivides this area 5x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1980.

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H03H 15/02 using analogue shift registers since 1980 +1 CPC IPC+CPC Available in IPC and CPC
H03H 2015/002 2nd only CPC only CPC only
H03H 2015/005 2nd only CPC only CPC only
H03H 2015/007 2nd only CPC only CPC only
H03H 2015/026 2nd only CPC only CPC only

Class H03,2013–2023, worldwide · Source: EPO PATSTAT

Class H03,2013–2023, worldwide · Source: EPO PATSTAT