| All Patents in class 408/147 |
Patents 1 -
15
of 46
      |
| Number | Date | Patentee | Title | Type |
| 830 | Jul. 09, 1838 | T. Keane, J. Keane | Machine for cutting wood-screws | screw machines |
| 4,548 | May 30, 1846 | T.W. Harvey | Making Wood Screws | screw machines |
| 22,474 | Dec. 28, 1858 | H. Stone | Expanding bit | drill bits |
| 50,600 | Oct. 24, 1865 | O.A. Smith, C.A. King | Improved Tool for Cutting Washers | |
| 63,882 | Apr. 16, 1867 | A.P. Gruger | Improved Device for Cutting Washers | washer cutters |
| 79,714 | Jul. 07, 1868 | A. Wood | Screw-Cutter | nut or bolt making machines |
| 94,870 | Sep. 14, 1869 | W.A. Clark | Improved Washer-Cutter | washer cutters |
| 101,164 | Mar. 22, 1870 | J.G. Robinson | Improvement in hub-reamer | wheelwright |
| 107,700 | Sep. 27, 1870 | P. McCormick | Improvement in Washer-Cutters | washer cutters |
| 141,264 | Jul. 29, 1873 | W.H. Arnold, J. Duncan | Improvement in hub-boring machines | wheelwright |
| 143,738 | Oct. 14, 1873 | H.E. Whipple | Washer-Cutters | washer cutters |
| 150,687 | May 12, 1874 | H. Millward, J.L. Hall | Screw Cutting Machines | screwcutting lathes |
| 168,607 | Oct. 11, 1875 | E. Brule | Improvement in Washer-Cutters | washer cutters |
| 177,982 | May 30, 1876 | J.S. Appleton | Improvement in Washer-Cutters | washer cutters |
| 209,726 | Nov. 05, 1878 | W.F. Tilton | Improvement in Devices for Cutting Washers | washer cutters |
