Measuring – testing – or signalling instruments – Clock or clock case – Changeable exhibitor – e.g. – digital type
Patent
1978-05-31
1980-07-22
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Changeable exhibitor, e.g., digital type
D10 18, D10 37, D1001, D1002
Patent
active
D02559960
REFERENCES:
patent: D204773 (1966-05-01), Levin
patent: D224801 (1972-09-01), Nagata
patent: 3162997 (1964-12-01), Schmidt
Jeweler's Circular-Keystone-11/78-pp. 64, 65-Travel Clocks.
European Jeweler(D.G.Z.)-5/74-p. 92-Travel Clocks at right.
Bronstein Sewall P.
Holtje Nelson C.
Tamura Electric Works Ltd.
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