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| All Patents in class 226/155 | |||||
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| Number | Date | Patentee | Title | Type | |
| 357,433 | Feb. 08, 1887 | W.S. Ward | Lifting device for drop-hammers | drop hammers | |
| 3,009,617 | Nov. 21, 1961 | R.W. Brown | Stock Feed for Automatic Multiple Spindle Lathe | multiple spindle lathes | |