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| All Patents in class 451/119 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,308X | Dec. 27, 1830 | R. Humphrey | Thrashing machine | threshers and thrashers | |
| 704,785 | Jul. 15, 1902 | C.H. Driver | Sandpapering-machine | belt sanders | |
| 1,612,830 | Jan. 04, 1927 | C.G. Olson | Grinding machine | gear hobbing machines | |
| 3,120,723 | Feb. 11, 1964 | W.F. Jessup | Machine Tool Mechanism for the Formation of Circular Contours | grinder dressers | |