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All Patents in class 72/441
Patents 46 - 56 of 56
First set of recordsPrevious set of recordsLast set of records
NumberDatePatenteeTitleType
1,486,976Mar. 18, 1924B.J. LindgrenMachine for compressing corrugated pipes
2,014,162Sep. 10, 1935H.F. MacMillin, E. BenedekHydraulic Press hydraulic presses
2,220,037Oct. 29, 1940R.P. FitzgeraldDouble-acting drop hammerdrop hammers
2,394,636Feb. 12, 1946F.J. RodeProgressive drawing pressstamping presses
2,619,072Nov. 25, 1952E.C. Clarke, Jr., P.A. RickrodeDrop hammer controldrop hammers
2,942,503Jun. 28, 1960R.P. FitzgeraldPower operated hammersdrop hammers
3,116,780Jan. 07, 1964C.J. BathPrestretch Fixture and Combination Thereof With Drawing Die Press metal stretch forming machines
3,162,232Dec. 22, 1964F.E. Munschauer, Jr., G.H. Trautman, Jr.Multiple depth control for power press brakesstamping presses
3,457,833Jul. 29, 1969R.K. SedgwickQuill Adjusting and Locking Meansmilling machines
3,841,140Oct. 15, 1974J.F. HrycControl system for press brakes and the likesheet metal brakes
4,170,124Oct. 09, 1979R. MacGregorHydraulic control system for press brakes and the likesheet metal brakes
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