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| Patents for Wm. H. Mulligan | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,125,945 | Jan. 26, 1915 | J.F. Cline, J.W. Boling | Tool | pliers | |
| 1,198,697 | Sep. 19, 1916 | J.W. Brooks | Valve Cutting Machine | valve grinding tools | |
| 1,236,826 | Aug. 14, 1917 | R.A. Durland | Valve Spring Compressor | valve spring tools | |
| 1,310,641 | Jul. 22, 1919 | H.A. Welch | Wrench | automotive specialty wrenches | |