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| All Patents in class 83/319 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,563,927 | Jan. 14, 1986 | R.J. Kinsley | Tube Cut-off Apparatus | pipe and tube notchers | |
| 4,694,718 | Sep. 22, 1987 | R.J. Kinsley | Tube Cut Off Apparatus | pipe and tube notchers | |