Wilhelm Ruf KG

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Hohenkirchen, DT

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Patents Grantslast 30 patents

Information Patent Grant
Tuning unit with bandswitch for high frequency receivers
- Patent number 4,097,828
- Issue date Jun 27, 1978
- Wilhelm Ruf KG
- Martin Hindermayr
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Adjustable attenuation equalizer
- Patent number 4,035,747
- Issue date Jul 12, 1977
- Wilhelm Ruf KG
- Martin Hindermayr
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information 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