Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1991-09-16
1993-02-02
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03329216
REFERENCES:
patent: D233787 (1974-11-01), Uchino
patent: D235627 (1975-07-01), Uchino
patent: D235628 (1975-07-01), Uchino
patent: D257009 (1980-09-01), Sibukawa et al.
patent: D280301 (1985-08-01), Nishina et al.
patent: 4229883 (1980-10-01), Kobashi
patent: 5056238 (1991-10-01), Chi
patent: 5102471 (1992-04-01), Sasaki
Central Tools, Inc.
Davis Antoine D.
Douglas Alan P.
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