JS

Johan A. Sparenberg

SW Stichting Voor De Technische Wetenschappen: 1 patents #31 of 169Top 20%
📍 Paterswolde, NL: #4 of 9 inventorsTop 45%
Overall (All Time): #3,797,504 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5312228 Ship's propeller Karel De Jong, Jacob De Vries 1994-05-17