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| All Patents in class 451/521 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 414,115 | Oct. 29, 1889 | J.S. Kenyon | Sandpapering-roller | ||
| 449,217 | Mar. 31, 1891 | A.T. Good | Polishing Cone | ||
 | 479,332 | Jul. 19, 1892 | E.K. Patten | Combined cutting and scouring head | |
| 622,432 | Apr. 04, 1899 | J.E. Almon | Sanding machine | ||
 | 646,511 | Apr. 03, 1900 | J.R. Thomas | Abrading-cylinder | |
 | 916,740 | Mar. 30, 1909 | L. Lucas | Sanding-machine | |
| 932,466 | Aug. 31, 1909 | F. Harbers | Planing and sanding machine | ||
 | 2,145,980 | Feb. 07, 1939 | O.E. Hadwiger, H.O. Schmidt | Sandpaper drum | |