| Patents for John R. Back |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 253,175 | Feb. 07, 1882 | J.R. Back | Friction-clutch | metal lathes |
| 332,833 | Dec. 22, 1885 | F.E. Reed, J.R. Back | Metal-turning lathe | engine lathes |
| 341,207 | May 04, 1886 | J.R. Back | Metal-turning lathe | metal lathes |
| 360,132 | Mar. 29, 1887 | J.R. Back | Tool-support for lathes | metal lathe accessories and attachments |
| 388,808 | Sep. 04, 1888 | J.R. Back | Front apron for lathe-carriages | metal lathes |
| 400,820 | Apr. 02, 1889 | J.R. Back | Metal Turning Lathe | metal lathes |
| 455,466 | Jul. 07, 1891 | J.R. Back | Rest for metal-turning lathes | metal lathes |
| 649,504 | May 15, 1900 | J.R. Back | Turning-lathe | metal lathes |
