Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1991-09-23
1993-06-01
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10 65, D 3105
Patent
active
D03360490
REFERENCES:
patent: 1571687 (1926-02-01), O'Loughlin
patent: 3172205 (1965-03-01), Gammon
patent: 4662078 (1987-05-01), Gammon et al.
patent: 4920657 (1990-05-01), Doyle
patent: 4934060 (1990-06-01), Evans
Davis Antoine D.
Douglas Alan P.
Millard Sidney W.
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