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PCE
Search Classifications
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DIFF Main Group
G04G 9/00

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Introduced: January 1980

CPC subdivides this area 5x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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  • G04G 9/0017 CPC only CPC only
  • G04G 9/0058 CPC only CPC only
  • G04G 9/0076 CPC only CPC only