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Patents for Thomas Zimmerman
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
1,850,054Mar. 15, 1932T. Zimmerman, S.A. StricklandCenterless Grindergrinding machines
1,851,265Mar. 29, 1932S.A. Strickland, T. ZimmermanFeeding Mechanism for Grindersgrinding machines
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