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| All Patents in class 451/425 | |||||
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| Number | Date | Patentee | Title | Type | |
| 74,206 | Feb. 11, 1868 | H. Disston | Improvement in Machine for Grinding the Rolls of Rolling Mills | grinding machines | |
| 573,528 | Dec. 22, 1896 | R.G. Pilkington | Apparatus for Dressing or Polishing Rolls | polishing machines | |
| 659,092 | Oct. 02, 1900 | F.A. Nystrom | Grinding-machine | machine making | |
| 1,285,476 | Nov. 19, 1918 | J. Zimmerman, W.A. Underwood | Calender Roll Grinder | ||