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PCE
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DIFF Subgroup
G04B 19/22

Arrangements for indicating different local apparent times; Universal time pieces

Introduced: September 1968

Title

Titles differ between systems:

IPC: Arrangements for indicating different local apparent times; Universal time-pieces

CPC: Arrangements for indicating different local apparent times; Universal time pieces

Full Title

Full titles differ between systems:

IPC:

Indicating the time by visual means > Arrangements for indicating different local apparent times; Universal time-pieces

CPC:

Indicating the time by visual means ( by electric lamps G04C17/02; display arrangements in general G09F) > Arrangements for indicating different local apparent times; Universal time pieces

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

4 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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