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| All Patents in class 74/89.17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 487,775 | Dec. 13, 1892 | F.H. Richards | Duplex feed mechanism | milling machines | |
| 1,005,864 | Oct. 17, 1911 | W.L. Milner | Valve Grinding Apparatus | valve grinding tools | |
| 2,782,832 | Feb. 26, 1957 | R.M. Shaw, Jr. | Bending Machines | metal bending machines | |
| 3,073,589 | Jan. 15, 1963 | G. Hohwart | Work clamping fixture | work holding | |