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All Patents in class 72/181
Patents 1 - 5 of 5
First set of recordsLast set of records
18,906Dec. 22, 1857A. JohnsonCornices, Machine
1,184,947May 30, 1916J.A. Gossett, J.C. HewittPipe-forming machinepipe making machines
1,322,926Nov. 25, 1919P.W. MillerMetal Bending Machinesheet metal
2,283,258May 19, 1942J. JensenMethod of and means for producing sheet metal joint locks and the likemetal bending machines
3,796,081Mar. 12, 1974A.S. BoardmanRoll-forming machines
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