Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1993-01-29
1994-06-14
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03477983
REFERENCES:
patent: 826776 (1906-07-01), Ferguson
patent: 2785467 (1957-03-01), Andersen
patent: 3119186 (1964-01-01), Stewart
patent: 4359850 (1982-11-01), Sinkes
patent: 4599804 (1986-07-01), Amos
patent: 4631833 (1986-12-01), Moye
Davis Antoine D.
Douglas Alan P.
Gernstein Terry M.
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