| Patents for M. E. Harrison |
Patents 1 -
7
of 7
      |
| 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 |
