| All Patents in class 81/37 |
Patents 1 -
10
of 32
      |
| Picture | Number | Date | Patentee | Title |
 | 17,891 | Jul. 28, 1857 | C.C. Plaisted | Bit, brace, for boring obliquely to the axis of the stock |
 | 18,282 | Sep. 29, 1857 | B.B. Hill | Bit-holder |
 | 19,028 | Jan. 05, 1858 | B.B. Hill, S.W. Adams | Bit-holder |
 | 32,618 | Jun. 25, 1861 | J.F. Cory | Bit stock with double universal joint |
 | 132,790 | Nov. 05, 1872 | Q.S. Backus | Improvement in bit-stocks |
 | 171,255 | Dec. 21, 1875 | J.W. Anthoine | Improvement in angular bit-stocks |
| | 298,542 | May 13, 1884 | C.H. Amidon | Bit-brace |
| | 301,339 | Jul. 01, 1884 | W.R. Clarkson | Bit-brace |
| | 378,274 | Feb. 21, 1888 | A.D. White | Bit-brace |
| | 512,237 | Jan. 02, 1894 | G.D. Strayer | Angling boring brace |
