Measuring – testing – or signalling instruments – Watch – wristwatch or case – Combined
Patent
1988-07-13
1991-09-10
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Watch, wristwatch or case
Combined
Patent
active
D03197905
REFERENCES:
patent: D309865 (1990-08-01), Woomer
patent: D310334 (1990-09-01), Jahan
patent: D310335 (1990-09-01), Wunderman
patent: D312792 (1990-12-01), Ratajski
patent: D312973 (1990-12-01), Woomer
patent: 2221206 (1940-11-01), Schwankhaus
patent: 2382728 (1945-08-01), Kupchick
patent: 3738100 (1973-06-01), Hassman et al.
European Journal, Watch, 2/1978, p. 3.
European Journal, Watches, 6/1988, p. 56.
Hong Kong Enterprise, Watches, 7/1988, p. 165.
Davis Antoine D.
Holtje Nelson C.
Roventa-Henex SA
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