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| All Patents in class 30/92 | |||||
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| Number | Date | Patentee | Title | Type | |
| 86,138 | Jan. 26, 1869 | R.A. Copeland | Pipe Wrench & Cutter | combination tools | |
| 700,118 | May 13, 1902 | H.W. Hathorn | Pipe or Tube Sawing Machine | pipe cutting machines | |