| All Patents in class 76/2 |
Patents 1 -
15
of 16
      |
| Number | Title | Classification(s) |
| 851 | Machinery for manufacturing double-twist screw-augers | 72/95, 76/102, 76/2 |
| RE72 | Improvement in machinery for manufacturing double-twist screw-augers | 172/754, 76/102, 76/2 |
| 56,869 | Improvements in Machinery for Swaging the Heads of Screw Augers | 76/2 |
| 76,955 | Improved Machine for Making Auger-Bits | 76/2 |
| 78,769 | Machine for Upsetting Cook's Bits | 72/449, 76/2 |
| 100,816 | Machine for Upsetting Cook's Bits | 76/2 |
| 116,509 | Improvement in machines for forming lips of auger-bits | 76/2 |
| RE4,516 | Machine for Upsetting Cook's Bits | 76/2 |
| RE4,517 | Machine for Upsetting Cook's Bits | 76/2 |
| RE4,569 | Improvement in Machinery for Forming the Lips of Augers | 76/2 |
| 124,683 | Improvement in Machines for Forming Auger-Bits | 76/2 |
| 139,091 | Improvement in Machines for Forming the Lips of Augers | 76/2 |
| 141,401 | Improvement in Machines for Forming Auger-Bits | 76/2 |
| RE5,624 | Machine for Upsetting Cook's Auger Bits | 76/102, 76/2 |
| 151,325 | Improvement in Machines for Forming Auger Bits | 76/2 |
