Johannes Gerardus Albertus Kropman

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Nijmegen, NL

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Patents Grantslast 30 patents

Information Patent Grant
Radio receiver having a preselection circuit tuned by a varactor wi...
- Patent number 3,968,439
- Issue date Jul 6, 1976
- U.S. Philips Corporation
- Adalbertus Hermanus Jacobus Nieveen van Dijkum
- H03 - BASIC ELECTRONIC CIRCUITRY