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Georg Koerner
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Hohenkirchen, DT
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last 30 patents
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Patent Grant
Adjustable attenuation equalizer
Patent number
4,035,747
Issue date
Jul 12, 1977
Wilhelm Ruf KG
Martin Hindermayr
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Trimming potentiometer in T or Pi network connection with parallel...
Patent number
3,938,070
Issue date
Feb 10, 1976
Wilhelm Ruf KG
Georg Koerner
H03 - BASIC ELECTRONIC CIRCUITRY