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| All Patents in class 81/177.3 | |||||
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| Number | Date | Patentee | Title | Type | |
| 348,765 | Sep. 07, 1886 | O.L. Neal | Screw and Drill Tool | screwdrivers | |
| 471,221 | Mar. 22, 1892 | L.M. Moores | Paper Delivering Tip | printer | |
| 2,440,584 | May 04, 1948 | L. Frank | Screw or Nut Driver | wrenches | |
| 2,543,283 | Feb. 27, 1951 | L. Frank | Screw and Nut Driving Tool | wrenches | |
| 2,585,641 | Feb. 12, 1952 | W.J. Faso | Finger-Supported Tool for Locating and Turning Small Nuts, Boltheads, Etc. | wrenches | |
| 2,735,321 | Feb. 21, 1956 | H.A. Browne, F. Browne | Finger Tip Tools | nut wrenches | |