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| All Patents in class 433/135 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 336,695 | Feb. 23, 1886 | J.W. Byers | Flexible Abrasive or Polishing Disk | ||
| 574,763 | Jan. 05, 1897 | F.A. Rudolph | Dental Tool | ||
| 1,120,530 | Dec. 08, 1914 | O.H. Pieper | Tool Holder | ||
| 1,121,671 | Dec. 22, 1914 | G.H. Sawyer | Grinding attachment for hand drills | ||
 | 1,669,994 | May 15, 1928 | H.L. Myers | Base grinding-machine wheel | |
| 1,839,139 | Dec. 29, 1931 | R.H. Brockman | Lathe Tool Holder | ||