Measuring – testing – or signalling instruments – Clock or clock case – Changeable exhibitor – e.g. – digital type
Patent
1977-02-24
1978-11-14
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Changeable exhibitor, e.g., digital type
D1001
Patent
active
D02502534
REFERENCES:
patent: D229959 (1974-01-01), Christie
patent: D239091 (1976-03-01), Toyoshima
Home Furnishings Daily - 7/13/76 - p. 9 - Dig. Clock at left.
Holtje Nelson C.
Marshall William A.
Spartus Corporation
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