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USPTO Patent Rankings Data through Sept 30, 2025
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Ralph L. Lowden — 1 Patent

Gaastra, MI: #1 of 1 inventorsTop 100%
Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #3,830,259 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5234075 Fire escape apparatus 1993-08-10