Measuring – testing – or signalling instruments – Clock or clock case – Changeable exhibitor – e.g. – digital type
Patent
1980-02-27
1982-09-21
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Changeable exhibitor, e.g., digital type
D10 30, D1001
Patent
active
D02662280
REFERENCES:
patent: D252801 (1979-09-01), Usuda
patent: D255551 (1980-06-01), Hirota
patent: D255996 (1980-07-01), Tamura
patent: D257235 (1980-10-01), Cheung
Adams Bruce L.
Burns Robert E.
Holtje Nelson C.
Lobato Emmanuel J.
Seikosha Co. Ltd.
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