| All Patents in class 408/214 |
Patents 1 -
15
of 65
      |
| Number | Date | Patentee | Title | Type |
| 1,114X | Jul. 31, 1809 | E. L'Hommedieu | Double podded central screw auger | auger bits |
| 2,642X | Jul. 17, 1816 | E. L'Hommedieu | Single twist screw auger | auger bits |
| 8,349X | Aug. 08, 1834 | A. Newton | Wood auger | auger bits |
| 8,350X | Aug. 08, 1834 | N.C. Sanford | Wood auger | auger bits |
| 9,169X | Oct. 14, 1835 | O.B. Percival | Gimlet | gimlets |
| 5,036 | Mar. 27, 1847 | A. Newton, L.B. Smith, E. Sanford | Wood auger | auger bits |
| 6,221 | Mar. 27, 1849 | N.C. Sanford | Means of auger manufacture | auger bits |
| 8,162 | Jun. 17, 1851 | R. Cook | Auger | auger bits |
| 11,280 | Jul. 11, 1854 | W. Spangler | Augers, gimlets, &c. | auger bits |
| 12,551 | Mar. 20, 1855 | I.W. Hoagland | Auger Bit With Detachable Cutting Lip | auger bits |
| 13,897 | Dec. 04, 1855 | C.C. Tolman | Gimlet | gimlets |
| 14,752 | Apr. 22, 1856 | K. Curtiss | Improved auger | auger bits |
| 21,960 | Nov. 02, 1858 | W.O. Hickok | Tap for Cutting Wooden Screws | drill bits |
| 25,512 | Sep. 20, 1859 | J. Kirby | Bung-Hole Borer & Reamer | tapered reamers |
| 26,613 | Dec. 27, 1859 | N.B. Phelps | Auger | auger bits |
