| All Patents in class 30/495 |
Patents 46 -
60
of 115
      |
| Number | Date | Patentee | Title | Type |
| 117,784 | Aug. 08, 1871 | S. Katz | Improvement in Hollow Augers | hollow bits |
| 119,096 | Sep. 19, 1871 | J. Swan | Improvement in Hollow Augers | hollow bits |
| 121,707 | Dec. 12, 1871 | W.A. Clark | Improvement in Hollow Augers | hollow bits |
| 130,826 | Aug. 27, 1872 | G.N. Stearns | Improvement in hollow augers | hollow bits |
| 133,570 | Dec. 03, 1872 | J. Deming | Improvement in Hollow Augers | hollow bits |
| 133,573 | Dec. 03, 1872 | M.L. Edwards | Improvement in Hollow Augers | hollow bits |
| 136,138 | Feb. 25, 1873 | C.W. Corr | Improvement in Hollow Augers | hollow bits |
| RE5,393 | May 06, 1873 | W.A. Clark | Improvement in Hollow-Augers | hollow bits |
| 138,623 | May 06, 1873 | O.A. Essig | Improvement in Hollow Augers | hollow bits |
| 141,745 | Aug. 12, 1873 | G.F. Almy | Improvement in Hollow Augers | hollow bits |
| 143,132 | Sep. 23, 1873 | J. Deming, E.W. Silver, E.W. Fawcett | Improvement in hollow augers | hollow bits |
| 149,985 | Apr. 21, 1874 | M.C. Buffington | Improvement in hollow augers | hollow bits |
| 151,067 | May 19, 1874 | J.M. Waters | Improvement in Cutter-Heads | tenoning machines |
| 151,178 | May 19, 1874 | J.D. Waite | Improvement in Hollow Augers | hollow bits |
| 151,828 | Jun. 09, 1874 | J. Benham | Improvement in Hollow Augers | hollow bits |
