by feeling; Clocks or watches for blind persons

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Indicating the time by other means or by combined means > by feeling; Clocks or watches for blind persons

CPC:

Indicating the time by other means or by combined means (electric or electromechanical indicating G04C ) > by feeling; Clocks or watches for blind persons

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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G04B 25/04 Alarm clocks or watches with devices stimulating the skin IPC+CPC Available in IPC and CPC