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All Patents in class 60/379
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
1,731,482	Oct. 15, 1929	H. Ernst, L.F. Nenninger	Spindle Oscillator	grinding machines
2,386,990	Oct. 16, 1945	P.A. Anderson, A.H. Swenson	Hydraulic system
2,660,985	Dec. 01, 1953	H. Ernst	Hydraulic Feed System	hydraulic apparatus

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