| All Patents in class 408/233 |
Patents 1 -
10
of 42
      |
| Picture | Number | Date | Patentee | Title |
| | 166 | Apr. 17, 1837 | J. Barns | Standing Press |
 | 12,551 | Mar. 20, 1855 | I.W. Hoagland | Auger Bit With Detachable Cutting Lip |
 | 18,909 | Dec. 22, 1857 | W. Kenyon | Screw-cutting machine |
 | 29,883 | Sep. 04, 1860 | J.M. Hathaway | Adjustable Auger |
 | 41,517 | Feb. 09, 1864 | G.W. Low | Pump Boring Bits |
 | 101,164 | Mar. 22, 1870 | J.G. Robinson | Improvement in hub-reamer |
 | 124,089 | Feb. 27, 1872 | H.S. Shepardson | Improvement in bits |
 | 158,090 | Dec. 22, 1874 | C.F. King | Auger with Removable Tip |
 | 164,999 | Jun. 29, 1875 | G.L. Holt | Twist Drill for Wood |
| | 177,410 | May 16, 1876 | S.W. Martin | Screw Tap |
