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