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| All Patents in class 125/11.17 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,972,826 | Sep. 04, 1934 | F.S. Haas | Grinding Machine | ||
 | 2,366,623 | Jan. 02, 1945 | H.S. Jakobsen | Radii and Angle Dresser | |
 | 3,167,064 | Jan. 26, 1965 | L.J. Barnard | Grinding wheel truing mechanism | |