Joseph Lafrenz

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Schaumburg, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Radio receiver monitoring and testing apparatus
- Patent number 4,234,964
- Issue date Nov 18, 1980
- Industrial Electronics Service Company
- Richard F. Cieslak
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio receiver monitoring and testing apparatus
- Patent number 4,143,323
- Issue date Mar 6, 1979
- Industrial Electronics Service Company
- Richard F. Cieslak
- H04 - ELECTRIC COMMUNICATION TECHNIQUE