characterised by carrier particles

Introduced: July 1974

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Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1990.

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G03G 9/103 CPC only CPC only
G03G 9/107 having magnetic components since 1990 +4 CPC IPC+CPC Available in IPC and CPC
G03G 9/113 having coatings applied thereto since 1990 +4 CPC IPC+CPC Available in IPC and CPC