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| All Patents in class 83/578 | |||||
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| Number | Date | Patentee | Title | Type | |
| 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 | |
| 1,277,786 | Sep. 03, 1918 | C.E. Van Auken | Duplex Saw | metal sawing machines | |
| 3,153,360 | Oct. 20, 1964 | E.I. Coulon | Apparatus for Slotting the Ends of Tubing | pipe and tube notchers | |