| Patents for D. P. Wolhaupter |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 492,380 | Feb. 28, 1893 | C.S. Ahner | Sucker Rod Clamp Or Wrench | wrenches |
| 518,136 | Apr. 10, 1894 | E.O. Rogers, S. Coons | Lathe Chuck | metal lathe chucks |
| 530,109 | Dec. 04, 1894 | S.J. Johnston | Carriage or Wagon Jack | axle nut wrench combination tools |
| 549,221 | Nov. 05, 1895 | M. Wenger | Wrench | screw adjust wrenches |
| 560,438 | May 19, 1896 | E.H. Smith | Combined Nut and Pipe Wrench | pipe and nut combination wrenches |
| 608,293 | Aug. 02, 1898 | O. Lannon | Pipe Wrench | pipe wrenches |
| 674,735 | May 21, 1901 | S.J. Johnston | Combination tool (brace wrench) | brace wrenches |
