Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Chemical
Patent
1997-10-21
1998-12-08
Davis, Antoine Duval
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Chemical
D10 78, 1004
Patent
active
D04022190
REFERENCES:
patent: 5596155 (1997-01-01), Holland
Hewson C. Bruce
Nielsen, deceased Knud Peter
Davis Antoine Duval
Quantech Instruments Inc.
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