| All Patents in class 81/54 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 226,149 | Apr. 06, 1880 | J.H. Alexander | Wrench | axle nut wrenches |
| 644,079 | Feb. 27, 1900 | E. Huber | Attachment for tightening nuts | drill press accessories |
| 1,578,331 | Mar. 30, 1926 | R.D. Litwiller | Thrashing Machine Cylinder Wrench | cylinder tooth wrenches |
| 1,684,633 | Sep. 18, 1928 | A. Levedahl | Screw or nut driving device for portable power-driven rotary tools | handheld power tools |
| 1,699,870 | Jan. 22, 1929 | S.D. Black, A.G. Decker | Portable tool | handheld power tools |
| 2,107,108 | Feb. 01, 1938 | J. De Mooy | Rotary Tool | pneumatic tools |
| 3,460,408 | Aug. 12, 1969 | J.G. Raymond | Depth gauge | handheld power drills |
