| All Patents in class 408/91 |
Patents 1 -
10
of 36
      |
| Picture | Number | Date | Patentee | Title |
 | 7,083X | May 25, 1832 | W.B. Fahnestock | Tonsillarum Sector |
 | 7,083 | Feb. 12, 1850 | G. Flautt | Auger for boring-machines |
 | 24,427 | Jun. 14, 1859 | D. Dunham | Machine for spacing and boring blind-stiles |
 | 32,550 | Jun. 11, 1861 | S.L. Fitts | Boring-machine |
 | 63,532 | Apr. 02, 1867 | C.B. Knapp | Improvement in boring machines |
 | 68,362 | Sep. 03, 1867 | W.D. Grimshaw | Improved drilling machine |
 | 74,724 | Feb. 18, 1868 | J.M. Seymour | Improvement in spacing and boring-machines |
 | 112,372 | Mar. 07, 1871 | J.H. Pardieck | Improvement in boring machines |
 | 146,246 | Jan. 06, 1874 | G. Gardner | Improvement in boring-machines |
 | 148,855 | Mar. 24, 1874 | J.M. Seymour | Improvement in dovetailing-machines |
