| Patents for H. J. Bernhard |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 281,920 | Jul. 24, 1883 | W.L. Parmelee | Bit-stock | braces |
| 338,326 | Mar. 23, 1886 | H.M. Wilson | Pipe Wrench | pipe tongs |
| 340,516 | Apr. 20, 1886 | W. Moston | Improvement In Pipe-Tongs | pipe tongs |
| 341,503 | May 11, 1886 | A.P. Quigley | Improvements in Monkey-Wrenches | quick adjust wrenches |
| 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 |
| 461,894 | Oct. 27, 1891 | E. Cook | Pipe Wrench | pipe wrenches |
| 465,626 | Dec. 22, 1891 | J. Waterman | Convertible Drill and Wrench | wrench combination tools |
