Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1991-11-20
1993-07-27
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10 70
Patent
active
D03377296
REFERENCES:
patent: D241019 (1976-08-01), Chadwick
patent: 3133681 (1964-05-01), Shee
patent: 3519174 (1970-07-01), Ronay
patent: 3667677 (1972-06-01), Sprong
patent: 4042155 (1977-08-01), Sprong
Davis Antoine D.
Douglas Alan P.
Litman Richard C.
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