| All Patents in class 408/121 |
Patents 31 -
45
of 67
      |
| Number | Date | Patentee | Title | Type |
| 176,683 | Apr. 25, 1876 | J. Renshaw | Ratchet Drill | ratchet drills |
| 222,972 | Dec. 23, 1879 | J.B. White | Feed Screw for Drills | drill feed screws |
| 246,382 | Aug. 30, 1881 | E.G. Felthousen | Ratchet Drill | ratchet drills |
| 253,549 | Feb. 14, 1882 | J.A. Miller | Combined Wrench and Drill | ratchet wrenches |
| 261,758 | Jul. 25, 1882 | W. Pirsson | Improvement in Ratchet Drills and Wrenches | ratchet wrenches |
| 269,250 | Dec. 19, 1882 | A.A. Wilder | Hand-drill | hand drills |
| 273,676 | Mar. 06, 1883 | S. Gardner | Ratchet Drill | ratchet drills |
| 279,032 | Jun. 05, 1883 | G.W. Smith | Hand drilling-machine | hand drills |
| 282,809 | Aug. 07, 1883 | O.S. Walker | Ratchet Drill | hand drills |
| 287,986 | Nov. 06, 1883 | P.C. Wright | Metal Drilling Device | portable turning tools |
| 288,882 | Nov. 20, 1883 | A. Söderström | Ratchet Drill | ratchet drills |
| 289,110 | Nov. 27, 1883 | D.E. Kempster | Hand Drilling Machine | ratchet drills |
| 291,419 | Jan. 01, 1884 | R. Stephens | Ratchet Drill | ratchet drills |
| 292,345 | Jan. 22, 1884 | W. Moritz | Ratchet Drill | ratchet drills |
| 292,522 | Jan. 29, 1884 | P.A. Whitney | Ratchet Drill | ratchet drills |
