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| All Patents in class 72/345 | |||||
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| Number | Date | Patentee | Title | Type | |
| 402,668 | May 07, 1889 | C.L. Hart | Stamping-press | stamping presses | |
| 582,299 | May 11, 1897 | J. Mohs | Box Making Machine | cardboard box making machines | |
| 2,347,272 | Apr. 25, 1944 | W.F. Longfield | Sheet metal working press | stamping presses | |
| 3,699,882 | Oct. 24, 1972 | H.E. Keithley, R.A. Helrigel | Knockout bar assembly for presses | metalworking presses | |
| 3,878,706 | Apr. 22, 1975 | G.C. Berry, H.E. Keithley | Knockout arrangement for presses | metalworking presses | |