| All Patents in class 192/71 |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
 | 116,847 | Jul. 11, 1871 | J.W. Mahlon | Improvement in ratchet-drills |
| | 213,338 | Mar. 18, 1879 | S.D. Locke | Variable Speed Gearing |
| | 579,971 | Apr. 06, 1897 | E.H. Fish | Feed Mechanism for Engine Lathes |
 | 771,077 | Sep. 27, 1904 | A.B. Landis | Change-speed gearing |
| | 804,999 | Nov. 21, 1905 | W.E. Blair | Variable-Speed Gearing |
| | 1,018,080 | Feb. 20, 1912 | H.P. Reston | Safety Ratchet-Lever |
| | 1,081,244 | Dec. 09, 1913 | G.C. Marx, A.F. Becker | Electric fan |
 | 1,236,848 | Aug. 14, 1917 | G.O. Leopold | Alternate driving means for the North Bros. 1445 drill |
 | 1,250,826 | Dec. 18, 1917 | E. Feilhauer | Lathe clutch mechanism |
| | 1,338,752 | May 04, 1920 | A.M. Sosa | Drilling Machinery |
