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Werner Schaefer
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Kronberg, DE
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last 30 patents
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Patent Grant
Measuring component concentration in a gas blend
Patent number
4,902,138
Issue date
Feb 20, 1990
Hartmann & Braun AG
Heinz-Dieter Goeldner
G01 - MEASURING TESTING
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Patent Grant
Infrared gas analyzer
Patent number
4,682,031
Issue date
Jul 21, 1987
Hartmann & Braun AG
Walter Fabinski
G01 - MEASURING TESTING