Measuring – testing – or signalling instruments – Clock or clock case – Changeable exhibitor – e.g. – digital type
Patent
1976-01-22
1977-09-13
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Clock or clock case
Changeable exhibitor, e.g., digital type
D1001
Patent
active
D02457652
REFERENCES:
patent: 3872233 (1975-03-01), Manly
patent: D225429 (1972-12-01), Vuillemier
patent: D234578 (1975-03-01), Powers
patent: D235137 (1975-05-01), Muir
Flehr Paul D.
Holtje Nelson C.
Sharp Kabushiki Kaisha
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