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| Patents for W. P. Welch | |||||
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| Number | Date | Patentee | Title | Type | |
| 89,724 | May 04, 1869 | W.P. Welch, J.H. Harrison, E.L. Abbott | Improvement in machine for grinding saws | saw sharpening machines | |
| 362,791 | May 10, 1887 | W. Sexauer | Carpet Stretcher | combination tools | |