Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1992-04-06
1993-12-28
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10 61, D10 62
Patent
active
D03426866
REFERENCES:
patent: D300516 (1989-04-01), Foster et al.
patent: D314156 (1991-01-01), Doyle
patent: 1069593 (1913-08-01), Weaver et al.
patent: 4438538 (1984-03-01), Larsen
patent: 4697349 (1987-10-01), Lee
patent: 4700489 (1987-10-01), Vasile
Castle Linval B.
Davis Antoine D.
Douglas Alan P.
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