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| All Patents in class 83/513 | |||||
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| Number | Date | Patentee | Title | Type | |
| 260,176 | Jun. 27, 1882 | W.F. Durfee | Machine for Cutting, Punching and Swaging | ||
| 924,767 | Jun. 15, 1909 | A. Gruitsch | Hacksaw Machine | metal sawing machines | |
| 967,640 | Aug. 16, 1910 | M.H. Johnson | Hacksaw Machine | metal sawing machines | |
| 1,216,669 | Feb. 20, 1917 | J. Dudley | Hacksaw-machine | metal sawing machines | |
| 1,274,820 | Aug. 06, 1918 | C.E. Van Auken | Duplex Oscillating Saw | metal sawing machines | |