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USPTO Patent Rankings Data through Sept 30, 2025
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David E. Littleton — 1 Patent

SMSpears Manufacturing: 1 patents #6 of 15Top 40%
California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #2,973,311 of 4,157,543Top 75%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9810359 Pipe coupling Wayne Spears, Robert Wayne Spears, II 2017-11-07