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USPTO Patent Rankings Data through Sept 30, 2025
Home › Inventors › Charles James Spofford
Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.
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Charles James Spofford

Greenfield, MA: #1 of 3 inventorsTop 35%
Massachusetts: #3,706 of 11,797 inventorsTop 35%
Overall (2025): #422,146 of 469,880Top 90%
1 Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12371941 Self-aligning jamb jack screw with partial sphere — 2025-07-29

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