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| All Patents in class 81/345 | |||||
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| Number | Date | Patentee | Title | Type | |
| 717,479 | Dec. 30, 1902 | H.A. Westmoreland | Adjustable Wrench or Clamp | wedge adjust wrenches | |
| 2,320,967 | Jun. 01, 1943 | M.S. Dunkelberger | Mechanical finger gripping device | ||