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U.S. Pat. No. 190,459

U.S. Pat. No. 190,459

thingiverse

A 3D model of the innovative 1877 screwdriver handle design from U.S. Patent No. 190,459, which is archived in the U.S. PTO's database, is available for your viewing pleasure. "To all whom it may concern:" Henry Wilkinson of Collinsville, Hartford, Connecticut, hereby declares that he has devised novel and practical enhancements to screwdriver handles. Learn more!

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