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PCE
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DIFF Subgroup
G04C 23/34

with provision for automatic modification of the programme, e.g. on Sunday

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals > Mechanisms continuously running to relate the operation(s) to the time of day > with provision for automatic modification of the programme, e.g. on Sunday

CPC:

Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals (if restricted to producing acoustic time signals by electrical means G04C21/00) > Mechanisms continuously running to relate the operation(s) to the time of day > with provision for automatic modification of the programme, e.g. on Sunday

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

Child Classifications

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