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| All Patents in class 451/16 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,284,954 | Jun. 02, 1942 | R.E. Flanders | Grinding Wheel and Truing Mechanism Feed | grinder dressers | |
| 2,641,873 | Jun. 16, 1953 | F.S. Haas | Automatic Truing Mechanism | grinder dressers | |
| 2,921,415 | Jan. 19, 1960 | A.L. Kellermann, B.S. Shaw | Cross Feed Mechanism for Machine Tool | tool grinders | |