| Patents for Joseph B. Pierson |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 438,613 | Oct. 21, 1890 | U. Eberhardt | Shaping Machine | |
| 510,121 | Dec. 05, 1893 | U. Eberhardt, H.E. Eberhardt, F.L. Eberhardt | Gear-cutting machine | gear making machines |
| 515,906 | Mar. 06, 1894 | U. Eberhardt, H.E. Eberhardt | Multiplex gear-cutter | gear making machines |
| 541,475 | Jun. 25, 1895 | F.L. Eberhardt, H.E. Eberhardt, U. Eberhardt | Crank Planer | metal shapers |
| 617,723 | Jan. 17, 1899 | U. Eberhardt, H.E. Eberhardt, F.L. Eberhardt | Gear-cutter clamp for wheel-blanks | gear making machines |
| 700,184 | May 20, 1902 | H.F. Emme, F.L. Eberhardt | Gear-cutting engine | gear making machines |
