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| Patents for M. E. Harrison | |||||
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| Number | Date | Patentee | Title | Type | |
| 357,898 | Feb. 15, 1887 | S. Benson | Spokeshave | spokeshaves | |
| 422,879 | Mar. 04, 1890 | W. Forgie | Improvements In Automatic Wrench for Coupling and Uncoupling the Tools or Drill-Rods of Well-Boring Apparatus | wrenches | |
| 497,260 | May 09, 1893 | G.P. Woelfel | Pipe Wrench | self-adjust wrenches | |
| 497,797 | May 23, 1893 | R.C. Jones | Pipe Tongs | pipe tongs | |
| 549,573 | Nov. 12, 1895 | W.J. Letzkus | Keyway Cutter | milling machines | |
| 593,736 | Nov. 16, 1897 | E.B. Colyer | Jar Wrench | jar wrenches | |
| 691,631 | Jan. 21, 1902 | J.H. Jackson | Spirit Level | line levels | |