Measuring – testing – or signalling instruments – Watch – wristwatch or case – Combined
Patent
1975-01-10
1978-04-11
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Watch, wristwatch or case
Combined
D1002
Patent
active
D02477017
REFERENCES:
patent: D138444 (1944-08-01), Smoleroff
patent: D235520 (1975-06-01), Kwon
patent: 3738099 (1973-06-01), Tanaka
Jeweler's Circular Keystone, 8/72--p. 51--digital clock.
Hinderstein Philip M.
Holtje Nelson C.
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