| Patents for J. W. Walker |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 1,056,332 | Mar. 18, 1913 | J. Hartness, G.A. Perry | Turret-lathe | turret lathes |
| 1,084,546 | Jan. 13, 1914 | J. Hartness | Chuck | metal lathe chucks |
| 1,130,274 | Mar. 02, 1915 | J. Hartness | Metal-turning tool | metal lathe accessories and attachments |
| 1,130,275 | Mar. 02, 1915 | J. Hartness | Metal-turning tool | metal lathe accessories and attachments |
| 1,130,276 | Mar. 02, 1915 | J. Hartness | Automatic chucking-lathe | metal lathes |
| 1,130,277 | Mar. 02, 1915 | J. Hartness | Multispindle lathe | multiple spindle lathes |
