Measuring – testing – or signalling instruments – Clock or clock case – Changeable exhibitor – e.g. – digital type
Patent
1978-09-20
1980-10-07
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Changeable exhibitor, e.g., digital type
D10 18, D1001
Patent
active
D02572354
REFERENCES:
patent: D252801 (1979-09-01), Usuda
Jeweler's-Circular-Keystone -7/78-p. 152-Clock at bottom-left.
Jewelers Circular-Keystone-11/78- p. 64-Clock at left.
Holtje Nelson C.
Promotors Limited
VanOpehm Remy J
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