| All Patents in class 74/333 |
Patents 1 -
15
of 50
      |
| Number | Date | Patentee | Title | Type |
| 134,237 | Dec. 24, 1872 | C.H. Amidon | Improvement in drills | eggbeater drills |
| 321,196 | Jun. 30, 1885 | U. Eberhardt, H.E. Eberhardt | Drilling-Machine | drill presses |
| 341,207 | May 04, 1886 | J.R. Back | Metal-turning lathe | metal lathes |
| 407,339 | Jul. 23, 1889 | H.E. Eberhardt, U. Eberhardt | Drilling Machine | drill presses |
| 715,921 | Dec. 16, 1902 | W.A. Wood | Feed Mechanism for Screw Cutting Lathes | metal lathes |
| 725,099 | Apr. 14, 1903 | W.F. Groene, R.K. Le Blond | Variable Speed Mechanism for Back Gearing | gearing |
| 725,141 | Apr. 14, 1903 | C.F. Laur, A.E. Robinson | Speed Changing Mechanism | metal lathes |
| 761,324 | May 31, 1904 | W.L. Schellenbach | Speed Changing Mechanism | |
| 788,483 | Apr. 25, 1905 | N.D. Chard, W. Lodge | Head-Stock for Engine-Lathes | metal lathes |
| 788,500 | Apr. 25, 1905 | N.D. Chard | Gearing for Lathe Head-Stocks | gearing |
| 788,658 | May 02, 1905 | R.K. Le Blond | Speed Changing Device | machine mechanisms |
| 810,634 | Jan. 23, 1906 | H.L. Flather | Change Speed Gearing for Lathes | gearing |
| 818,632 | Apr. 24, 1906 | C.F. Laur | Variable Speed Mechanism | machine mechanisms |
| 823,201 | Jun. 12, 1906 | J.P. Barnes | Gearing | drill presses |
| 831,379 | Sep. 18, 1906 | W. Runge | Gearing for machine-tools | power transmission |
