| All Patents in class 76/102 |
Patents 1 -
10
of 22
      |
| Picture | Number | Date | Patentee | Title |
 | 8,491X | Nov. 11, 1834 | R. French | Making augers |
 | 851 | Jul. 24, 1838 | R.N. Watrous, E. L'Hommedieu | Machinery for manufacturing double-twist screw-augers |
 | 3,181 | Jul. 20, 1843 | R. French | Single Lip Auger Bit & Means of Making |
 | RE72 | Jul. 30, 1845 | E. L'Hommedieu | Improvement in machinery for manufacturing double-twist screw-augers |
 | 12,551 | Mar. 20, 1855 | I.W. Hoagland | Auger Bit With Detachable Cutting Lip |
 | 13,780 | Nov. 13, 1855 | R. Cook | Dies for Making Cook's Bits |
 | 14,561 | Apr. 01, 1856 | G.G. Griswold | Method of Manufacturing Augers |
 | 55,498 | Jun. 12, 1866 | R. Jennings | Improvement in Dies for Swaging the Ends of Auger Blanks |
 | 61,208 | Jan. 15, 1867 | A.C. Kasson | Improvement in augers |
 | 68,012 | Aug. 20, 1867 | J. Swan | Manufacture of Single Twist Augers |
