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All Patents in class 72/20.4 | |||||
Number | Date | Patentee | Title | Type | |
2,647,421 | Aug. 04, 1953 | W.W. Criley | Upsetting Forging Machine | forging machines | |
2,713,376 | Jul. 19, 1955 | C.J. Bath | Metal-Forming Machine | metal bending machines | |
2,742,802 | Apr. 24, 1956 | H.A. Weyer, E.C. Clarke | Impact device | drop hammers | |
2,868,268 | Jan. 13, 1959 | V.A. Zaverruha, T.E. Lewis, Jr. | Coil-Forming Machine with Generator Controlled Spindle Postitioning Means | coil forming |