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| Patents for William L. Lay | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-187,803,666 | Sep. 17, 1878 | H.J. Haddan, W.L. Lay | Tongs or Pliers | pipe tongs | |
| 210,698 | Dec. 10, 1878 | W.L. Lay, O.B. Lay | Pipe-Tongs | pipe tongs | |