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| All Patents of Type: impact wrenches | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,815,834 | Dec. 10, 1957 | A.W. Mall | Portable power tool drive mechanism | impact wrenches | |
| D200,876 | Apr. 13, 1965 | F.J. Kuenzl | Impact wrench | impact wrenches | |
| 3,584,527 | Jun. 15, 1971 | D.R. Bosten | Tool and attachments therefor | impact wrenches | |
| D396,620 | Aug. 04, 1998 | E. Sung | Impact Wrench | impact wrenches | |