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John P. D. Sprung

📍 Surrey, CA: #375 of 718 inventorsTop 55%
Overall (All Time): #3,970,671 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4651914 Mobile pipe mill Douglas L. Sprung 1987-03-24