| All Patents in class 408/72R |
Patents 1 -
10
of 31
      |
| Picture | Number | Date | Patentee | Title |
 | 7,380 | May 21, 1850 | E. Jenney | Machinery for sawing staves |
 | 12,078 | Dec. 12, 1854 | B.F. Taft | Boring-Machine |
 | 75,816 | Mar. 24, 1868 | F. Vester | Parser/Bifurcated Bit |
 | 141,425 | Aug. 05, 1873 | E. Caswell | Improvement in machines for boring hubs |
 | 144,547 | Nov. 11, 1873 | E.H. Kelly | Watchmakers' Lathes |
 | 145,488 | Dec. 16, 1873 | P.D. Cummings | Grinding Machines |
| | 200,285 | Feb. 12, 1878 | J. Hall | Boring and Drilling Apparatus |
| | 311,700 | Feb. 03, 1885 | E. Weyerbusch | Machine for Shaping Buttons |
| | 359,019 | Mar. 08, 1887 | J.C. Hyndman | Rock Drill |
 | 437,796 | Oct. 07, 1890 | W.M. Preston | Device to Facilitate the Drilling of Holes Centrally in Staffs for Watches, &c. |
