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| All Patents in class 451/504 | |||||
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| Number | Date | Patentee | Title | Type | |
| 408,876 | Aug. 13, 1889 | H.J. Distin | Grinding Tool | internal grinders | |
| 1,847,299 | Mar. 01, 1932 | R.D. Eaglesfield | Sanding machine | sanding machines | |
| 4,802,310 | Feb. 07, 1989 | R.W. Holmes | Sander Attachment | handheld power sanders | |
| 6,739,961 | May 25, 2004 | D.E. Haney | Abrasive band tightening apparatus | sanding machines | |