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| All Patents in class 409/139 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,976,106 | Oct. 09, 1934 | W.D. Archea | Machine Tool | milling machines | |
| 2,328,493 | Aug. 31, 1943 | E. Reaney | Method of Shave-Milling Steel | manufacturing processes | |
| 2,868,089 | Jan. 13, 1959 | H.E. Bargren, G.B. Seeberg | Milling machine | ||
| 6,375,397 | Apr. 23, 2002 | H.K. Lotz | Continuous Steel Casting Installation with Deburrer for Cutting Burrs and Cutting Beads on Slabs, Blooms and Billets | deburring apparatus | |