| All Patents in class 192/81C |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 78,183 | May 26, 1868 | W.C. Burch | Improved hand-drill | hand drills |
| 134,355 | Dec. 31, 1872 | W.C. Burch | Drills for Drilling Metals | ratchet drills |
| 933,866 | Sep. 14, 1909 | H.E. Frentzel, H. WEickel | Load Brake | hoists, winches, come-alongs |
| 973,135 | Oct. 18, 1910 | A.B. Nutting | Buffing and polishing machine | bench or pedestal grinders |
| 1,661,652 | Mar. 06, 1928 | G.A. Carlson | Automobile window mechanism | automobiles |
| 2,105,330 | Jan. 11, 1938 | W.H. Pagenkopf | Tool Holder | metalworking machine tool holders |
