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Der-Form Chang

WS Weirton Steeel: 1 patents #25 of 42Top 60%
Overall (All Time): #3,609,055 of 4,157,543Top 90%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6035689 Rigid sheet metal rivet button fabrication for convenience-feature can stock Jyhwen Wang 2000-03-14