Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1987-04-27
1990-07-10
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Patent
active
D03091180
REFERENCES:
patent: D301988 (1989-07-01), Kruse et al.
patent: 2949764 (1960-08-01), Knauth
patent: 3101615 (1963-08-01), Pavone
patent: 3301053 (1967-01-01), Walch, Jr. et al.
patent: 4700579 (1987-10-01), Hall
patent: 4719807 (1988-01-01), Jovick
Davis Antoine D.
Great Plains Industries Inc.
Holtje Nelson C.
McCarthy Bill D.
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