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John W. Summerfield

📍 Rosemount, MN: #6 of 22 inventorsTop 30%
🗺 Minnesota: #1,346 of 4,549 inventorsTop 30%
Overall (2002): #184,172 of 266,432Top 70%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6346792 Battery charging and maintenance system Victor S. Wright 2002-02-12