| All Patents in class 409/317 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 115,934 | Jun. 13, 1871 | J.M. Conner | Improvement in Machines for Ornamenting Printers Rules |
| | 320,652 | Jun. 23, 1885 | J. Hall | Drifting Device for Lathes |
| | 325,061 | Aug. 25, 1885 | C.K. Dawes | Planing and Slotting Machine |
| | 332,124 | Dec. 08, 1885 | A.F. Ward | Hoop-planing machine |
 | 878,099 | Feb. 04, 1908 | J.R. Thomas | Planing-machine |
| | 1,355,780 | Oct. 12, 1920 | G. Richards | Machine for Backing Off the Teeth of Hobs for Cutting Screw Threads |
 | 2,047,052 | Jul. 07, 1936 | G.H. Benzon, Jr. | Planer and Similar Machine |
