| All Patents in class 408/121 |
Patents 16 -
30
of 67
      |
| Number | Date | Patentee | Title | Type |
| 75,090 | Mar. 03, 1868 | T.A. Weston | Improvement in Ratchet-Head and Lever | ratchet wrenches |
| 78,183 | May 26, 1868 | W.C. Burch | Improved hand-drill | hand drills |
| 79,115 | Jun. 23, 1868 | M. Haingue | Drill-stock (engineer's) | hand drills |
| 81,145 | Aug. 18, 1868 | W.F. Cornell | Ratchet Drill | ratchet drills |
| 128,430 | Jun. 25, 1872 | T.J. Sloan | Improvement in hand drilling-machines | brace handles |
| 129,696 | Jul. 23, 1872 | A.G. Vottier | Improvement in Ratchet-Drills | ratchet drills |
| 130,645 | Aug. 20, 1872 | T.J. Lavery | Improvement in Ratchet-Drills | ratchet drills |
| 134,355 | Dec. 31, 1872 | W.C. Burch | Drills for Drilling Metals | ratchet drills |
| 142,356 | Sep. 02, 1873 | T.J. Sloan | Ratchet Drills | ratchet drills |
| 148,002 | Feb. 24, 1874 | J. Swank | Ratchet-Drills | |
| 149,108 | Mar. 31, 1874 | W.M. Ellison | Ratchet Drills | ratchet drills |
| 156,602 | Nov. 03, 1874 | H. Smith | Ratchet-Drills | drill accessories |
| 167,392 | Sep. 07, 1875 | H.C. English | Ratchet Drill | ratchet drills |
| 169,262 | Oct. 26, 1875 | G. Hayden | Improvement in ratchet-drills | ratchet braces |
| 173,145 | Feb. 08, 1876 | H.R. Way | Improvement in Ratchet-Drills | ratchet braces |
