JJ

Jan Jorna

📍 Gqeberha, ZA: #19 of 64 inventorsTop 30%
Overall (All Time): #2,878,014 of 4,157,543Top 70%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9903615 Solar heat collecting device Hans Helmut Hahn 2018-02-27