JK

Johannes de Keijzer

ST Staat Der Nederlanden Staatsbedrijf Der Posterijen, Telegrafie En Telefonie: 1 patents #8 of 27Top 30%
📍 Zoetermeer, NL: #85 of 196 inventorsTop 45%
Overall (All Time): #4,043,090 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4479188 Digital detector for a multi-frequency code in an analog signal — 1984-10-23