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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G04F 13/02

using optical means

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Apparatus for measuring unknown time intervals by means not provided for in groups > using optical means

CPC:

Apparatus for measuring unknown time intervals by means not provided for in groups G04F5/00 - G04F10/00 > using optical means

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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