Measuring – testing – or signalling instruments – Clock or clock case – Changeable exhibitor – e.g. – digital type
Patent
1978-04-14
1980-09-23
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Changeable exhibitor, e.g., digital type
D10 18, D1001
Patent
active
D02570025
REFERENCES:
patent: D131208 (1942-01-01), Kauffman
patent: D209779 (1968-01-01), Chapman
patent: D239511 (1976-04-01), Watson
patent: D240858 (1976-08-01), Taguchi
patent: 3566602 (1971-03-01), Bergey
patent: 3667839 (1972-06-01), Artaud
Home Furnishings Daily, Jul. 23, 1971, p. 17, T.V.'s at right and left.
Grossman Rene E.
Holtje Nelson C.
Texas Instruments Incorporated
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