Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1991-01-07
1993-04-27
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
D10 80
Patent
active
D03350940
REFERENCES:
patent: D299234 (1989-01-01), Kajita
patent: 3711661 (1973-01-01), Garrett et al.
patent: 4292480 (1981-09-01), Sweatt
patent: 4703497 (1987-10-01), Ingalsbe
patent: 4912755 (1990-03-01), Blood et al.
patent: 4920555 (1990-04-01), Ingalsbe
patent: 5144657 (1992-09-01), Depaepe
Rochester Instrument Sysbems, Rochester, N.Y., Super Cal II Calibrator, Published Dec. 1990.
Ingalsbe Daryl E.
Ingalsbe David L.
Davis Antoine D.
Douglas Alan P.
Independent Technologies, Inc.
Skinner Joel D.
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