| All Patents in class 144/106 |
Patents 1 -
10
of 10
      |
| Picture | Number | Date | Patentee | Title |
 | 34,137 | Jan. 14, 1862 | J. Edgecomb | Improvement in boring-machines |
 | 110,530 | Dec. 27, 1870 | E.J. Worcester | Improvement in boring-machines |
 | 122,402 | Jan. 02, 1872 | Z.C. Phillips | Improvement in boring-machines |
 | 140,925 | Jul. 15, 1873 | J.C. Keller | Improvement in metal-drilling machines |
 | 296,053 | Apr. 01, 1884 | Z.C. Phillips | Boring-machine |
 | 324,100 | Aug. 11, 1885 | J. Ernst | Boring machine |
 | 427,325 | May 06, 1890 | J.E. Hitch, F. Mill, C.H. Irwin | Boring-machine |
| | 838,827 | Dec. 18, 1906 | J.S. Waugh | Portable door-mortising machine |
 | 1,748,556 | Feb. 25, 1930 | E.J. McKnight | Boring machine |
 | 2,333,025 | Oct. 26, 1943 | G.J. Mayer | Angle Drill |
