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| All Patents in class 30/93 | |||||
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| Number | Date | Patentee | Title | Type | |
| 213,293 | Mar. 18, 1879 | T. Mamer, F.J. Wallerius | Tube-Cutter | tube cutting machines | |
| 909,182 | Jan. 12, 1909 | C.A. Hart | Device for Removing Burs from Pipes | pipe deburring tools | |
| 941,568 | Nov. 30, 1909 | F. Fleming | Combined Drill and Stay Bolt Cutter | boiler repair tools | |