| All Patents of Type: drill accessories |
Patents 1 -
15
of 80
      |
| Number | Date | Patentee | Title | Type |
| 19,829 | Apr. 06, 1858 | J. Quigley, N. Clare | Reamer/Plug Cutter Attachment | drill accessories |
| 21,961 | Nov. 02, 1858 | W.O. Hickok | Die for Cutting Wooden Screws | drill accessories |
| 51,248 | Nov. 28, 1865 | W.C. Wells | Drill Gage | measurement gauges |
| 54,825 | May 15, 1866 | G.W. Wait | Improvement in Tools for Making Spiles | drill accessories |
| 62,754 | Mar. 12, 1867 | T.C. Keith | Auger Chip Clearing Accessory | drill accessories |
| 76,123 | Mar. 31, 1868 | W.C. Wells | Drill Gage | drill accessories |
| 92,927 | Jul. 27, 1869 | A. Amory | Improvement in guide-attachments for boring-instruments | drill accessories |
| 95,964 | Oct. 19, 1869 | J.S. Zerbee | Improvement in Combination Tools | countersinks |
| 115,587 | Jun. 06, 1871 | R.H. Dorn | Improvement in circular cutters | drill accessories |
| 117,594 | Aug. 01, 1871 | C.W. Beals | Improvement in Devices for Resetting Old Auger-Bits | drill accessories |
| 139,487 | Jun. 03, 1873 | A.C. Trafton | Drill Gage | drill accessories |
| 156,602 | Nov. 03, 1874 | H. Smith | Ratchet-Drills | drill accessories |
| 195,877 | Oct. 09, 1877 | D.F. Barber | Improvement in Countersinks | countersinks |
| 284,449 | Sep. 04, 1883 | L.F. Longmore | Drill Guide and Rest | drill accessories |
| 303,368 | Aug. 12, 1884 | A.G. Goldthwait | Drill Gage | drill accessories |
