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Patents for John W. Roberts | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 318,855 | May 26, 1885 | T. Bemis, G.W. Bemis, Sr. | Car-axle box | |
4,934,220 | Jun. 19, 1990 | R.J. Slusar, J.W. Roberts, J.R. Annis | Sealed Reversible Ratchet Wrench |