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| All Patents in class 82/48 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,182,477 | May 09, 1916 | C.L. Grohmann, B.M. Hanson | Boring-machine | drilling and boring | |
| 1,226,303 | May 15, 1917 | L.H. Brightman | Automatic cut-off machine | metal lathes | |
| 1,826,953 | Oct. 13, 1931 | C.A. Rich | Screw and Similar Machine | screw machines | |
| 2,481,446 | Sep. 06, 1949 | L. Quijada | Pipe and tube cutter | pipe cutting machines | |