| All Patents in class 30/495 |
Patents 31 -
45
of 115
      |
| Number | Date | Patentee | Title | Type |
| 64,423 | May 07, 1867 | M. Isbell | Improvement in Hollow Augers | hollow bits |
| 64,478 | May 07, 1867 | G.E. Booth | Improvement in Hollow Augers | hollow bits |
| 72,436 | Dec. 17, 1867 | A. Wippo | Auger & Rounder for Installing Casters | auger bits |
| 76,205 | Mar. 31, 1868 | F. Kraus | Improvement in hollow augers | hollow bits |
| 76,804 | Apr. 14, 1868 | J.L. Parker | Improvement in Hollow Augers | hollow bits |
| 82,957 | Oct. 13, 1868 | W.A. Ives | Improvement in hollow augers | hollow bits |
| 85,423 | Dec. 29, 1868 | J.H. Beauregard | Improvement in Hollow Augers | hollow bits |
| 86,364 | Feb. 02, 1869 | W.A. Clark | Improvement in Hollow Augers | hollow bits |
| RE3,365 | Apr. 13, 1869 | W.A. Ives | Improvement in Hollow Augers | hollow bits |
| 90,195 | May 18, 1869 | H.J. Rickard | Improvement in hollow auger | hollow bits |
| 93,808 | Aug. 17, 1869 | W.A. Clark | Improvement in Hollow Auger | hollow bits |
| 97,590 | Dec. 07, 1869 | D.B. Mills, J.C. Freeman, H.T. Beam | Improvement in Hollow Auger | hollow bits |
| 105,744 | Jul. 26, 1870 | I.H. Van Wie | Tapered Hollow Auger | hollow bits |
| 105,896 | Aug. 02, 1870 | C.S. Bonney | Improvement in Hollow Auger | hollow bits |
| 106,919 | Aug. 30, 1870 | A.F. Cushman | Improvement in Hollow Augers | hollow bits |
