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Udo Ringelstein
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Lorch, DE
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last 30 patents
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Patent Grant
Infrared detector
Patent number
4,967,081
Issue date
Oct 30, 1990
Heimann GmbH
Reiner Quad
G08 - SIGNALLING
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Patent Grant
Infrared detector circuit having a resistor series connected to the...
Patent number
4,906,834
Issue date
Mar 6, 1990
Heimann GmbH
Reiner Quad
G01 - MEASURING TESTING