| All Patents in class 408/122.5 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 114,545 | May 09, 1871 | W. Frankel | Improvement in ratchet-drills |
 | 116,955 | Jul. 11, 1871 | I.S. Hamilton | Improvement in ratchet-drills |
 | 197,896 | Dec. 04, 1877 | W.H. Richards | Improvement in ratchet-drills |
 | 231,361 | Aug. 17, 1880 | W.H. Richards | Ratchet Drill |
 | 264,107 | Sep. 12, 1882 | W. Sandiford | Ratchet-drill |
 | 267,462 | Nov. 14, 1882 | W. Sandiford | Ratchet-drill |
| | 314,449 | Mar. 24, 1885 | J.C. Imlay | Ratchet Drill |
| | 507,968 | Oct. 31, 1893 | C.T. Burr | Ratchet-drill |
| | 514,127 | Feb. 06, 1894 | J. Meahl | Double-acting ratchet drill |
| | 547,053 | Oct. 01, 1895 | C.A. Williams | Ratchet-drill (engineer's) |
