Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1991-05-31
1993-10-26
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03406547
REFERENCES:
patent: D259556 (1982-06-01), Kulman
patent: D311874 (1990-11-01), Ingram, II et al.
patent: D314156 (1991-01-01), Doyle
patent: 531047 (1894-12-01), Krueger
patent: 838463 (1906-12-01), Saxton
patent: 3134526 (1964-05-01), Schleicher
patent: 3149764 (1964-09-01), Waltz
patent: 4642899 (1987-02-01), Fass et al.
patent: 4679325 (1987-07-01), Sweatman
patent: 4884734 (1989-12-01), Kahl
Davis Antoine D.
Douglas Alan P.
Gernstein Terry M.
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