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| All Patents in class 30/97 | |||||
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| Number | Date | Patentee | Title | Type | |
| 29,602 | Aug. 14, 1860 | W. Kenyon | Gas-pipe cutter | metal lathe accessories and attachments | |
| 103,685 | May 31, 1870 | S.P. Tasker | Metal Tube Cutter | tube cutting machines | |
| 1,074,334 | Sep. 30, 1913 | W.W. Vosper | Pipe-Cutting Machine. | pipe cutting machines | |
| 1,493,452 | May 06, 1924 | A. Jardine | Pipe cutter | ||
| 1,749,861 | Mar. 11, 1930 | W.W. Vosper | Pipe Cutter | pipe cutting machines | |