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Patents for Ira E. Stump
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
722,332	Mar. 10, 1903	I.E. Stump	Bit-stock	spiral screwdrivers
1,259,926	Mar. 19, 1918	I.E. Stump	Mechanical movement	spiral screwdrivers

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