Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1993-03-24
1994-08-09
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D 8349
Patent
active
D03494632
REFERENCES:
patent: D249128 (1978-08-01), Stookey
patent: 733279 (1903-07-01), Sang
patent: 802202 (1905-10-01), Dougan
patent: 1389904 (1921-06-01), Rodolph
patent: 1451189 (1923-04-01), Vanderpool
patent: 4553327 (1985-11-01), Watanabe
patent: 4680864 (1987-07-01), Heagerty
patent: 4956919 (1990-09-01), Granger
Davis Antoine D.
Douglas Alan P.
Gernstein Terry M.
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