Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1991-11-05
1993-07-27
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Patent
active
D03377318
REFERENCES:
patent: 4332609 (1982-03-01), Kato
patent: 4741001 (1988-04-01), Ma
Mercurio Frank
Reiner Norbert
Davis A. D.
Douglas Alan P.
Precise International
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