Measuring – testing – or signalling instruments – Clock or clock case – Changeable exhibitor – e.g. – digital type
Patent
1989-02-14
1991-10-22
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Changeable exhibitor, e.g., digital type
D10 40
Patent
active
D03209440
REFERENCES:
patent: D245198 (1977-07-01), Terada
patent: D245419 (1977-08-01), Miyamoto
patent: D303771 (1989-10-01), Chan
patent: D315315 (1991-03-01), Stairs
patent: 4262842 (1981-04-01), Grover
Hong Kong Enterprise-11/87-p. 108-Timers.
Adams Bruce L.
Holtje Nelson C.
Seikosha Co. Ltd.
Wilks Van C.
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