| All Patents in class 408/92 |
Patents 1 -
10
of 20
      |
| Picture | Number | Date | Patentee | Title |
 | 4,251 | Nov. 01, 1845 | A. Weikart | Boring-machine |
| | 83,366 | Oct. 27, 1868 | A.J. Baird, J.M. Cullen | Improved Drill Press |
 | 529,023 | Nov. 13, 1894 | J.W. Duff | Chain drill attachment for bit brace |
 | 538,323 | Apr. 30, 1895 | C.D. Cutts | Bit-brace and hand drill |
 | 588,712 | Aug. 24, 1897 | P. Broadbooks | Drill Frame |
| | 618,512 | Jan. 31, 1899 | A. Kerry | Brace and Drill (chain vise) |
 | 626,474 | Jun. 06, 1899 | W.H. Ames | Hand-Brace Drill Attachment |
 | 628,110 | Jul. 04, 1899 | O. Mueller | Tapping-machine |
 | 665,399 | Jan. 08, 1901 | P. Broadbooks | Drilling Apparatus |
 | 683,794 | Oct. 01, 1901 | H. Politsch | Angle bit-stock |
