Digital clock

Details Digital clock Digital clock

1988-10-27

1992-03-17

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Clock or clock case

Changeable exhibitor, e.g., digital type

D10 12, D10 6

Patent

active

D03246523

REFERENCES:
patent: D150832 (1948-09-01), Fenenbock
patent: D225360 (1972-12-01), Healy
patent: D233428 (1974-10-01), Hestand
patent: D238558 (1976-01-01), Terada
patent: D239091 (1976-03-01), Toyoshima
patent: D255433 (1980-06-01), Anderson
patent: D282188 (1986-01-01), Terui
patent: D288343 (1987-07-01), Ogawa
patent: 4168870 (1979-09-01), Hill
Hong Kong Trader--6/1979--p. 84-clock at center.
Hong Kong Enterprise--12/81--p. 284--clock at bottom left.

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