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| Patents for William Robert Leeson | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-187,800,445 | Feb. 02, 1878 | W.R. Leeson | Spanners | quick adjust wrenches | |
| 208,105 | Sep. 17, 1878 | W.R. Leeson | Adjustable Spanner or Monkey-Wrench | quick adjust wrenches | |