| All Patents in class 74/86 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 124,774 | Mar. 19, 1872 | G.A. Walker | Improvement in paper-cutting machines | paper cutting machines |
| 525,443 | Sep. 04, 1894 | E.E. Hanna, C.L. Carman, P.W. Gates | Gyrating crusher | ore processing apparatus |
| 593,157 | Nov. 02, 1897 | Z.T. Furbish | Ratchet mechanism | spiral screwdrivers |
| 1,507,970 | Sep. 09, 1924 | A.A. Lazier | Ore Crusher | ore processing apparatus |
| 1,696,468 | Dec. 25, 1928 | J.F. Buhr | Multiple-spindle drill head | multiple spindle drill presses |
| 1,721,249 | Jul. 16, 1929 | F. Diehl | Gyratory fan | |
| 2,940,324 | Jun. 14, 1960 | P. Belzner | Wobble Drive | |
