Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1992-04-27
1994-05-10
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03467520
REFERENCES:
patent: D319404 (1991-08-01), Jackson, Sr.
patent: 1389486 (1921-08-01), Brown
patent: 4150488 (1979-04-01), Behnke
Krusling William A.
Spurr Thomas H.
Davis Antoine D.
Douglas Alan P.
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