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| Patents for W. T. Robertson | |||||
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| Number | Date | Patentee | Title | Type | |
| 175,010 | Mar. 21, 1876 | W.F. Barnes, J. Barnes | Improvement in foot-powers | human powered machines | |
| 399,014 | Mar. 05, 1889 | P. Brown | Vise | bench vises | |