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All Patents in class 73/470
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
2,164,900	Jul. 04, 1939	J.C. Campbell	Dynamic Balancer for Machine Tools	grinding machines
2,241,637	May 13, 1941	A.H. Dall, H. Ernst	Dynamic Balancing Mechanism for Machine Tools	grinding machines

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