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| All Patents in class 192/128 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,633,340 | Jun. 21, 1927 | C.D. McDonald | Automatic die press | ||
| 1,663,018 | Mar. 20, 1928 | C.D. McDonald | Automatic die press | ||
| 1,663,019 | Mar. 20, 1928 | C.D. McDonald | Automatic die-press-stopping mechanism | ||
| 1,663,020 | Mar. 20, 1928 | C.D. McDonald | Automatic press-stopping mechanism | ||
| 1,666,942 | Apr. 24, 1928 | C.D. McDonald | Automatic die-press stopping mechanism | ||
| 1,828,828 | Oct. 27, 1931 | E.W. Zeh | Emergency stop for friction screw presses | punch presses | |