| All Patents in class 81/31 |
Patents 1 -
15
of 22
      |
| Number | Date | Patentee | Title | Type |
| 139,667 | Jun. 10, 1873 | A.D. Goodell | Improvement in bit-stocks | brace chucks |
| 175,151 | Mar. 21, 1876 | F.P. Pfleghar | Ratchet bit-brace | ratchet braces |
| 207,964 | Sep. 10, 1878 | H.C. Hart | Ratchet bit-stock | brace chucks |
| 223,484 | Jan. 13, 1880 | A.H. Crockford | Bit-brace | braces |
| 228,810 | Jun. 15, 1880 | A.D. Goodell | Ratchet bit-brace | ratchet braces |
| 250,047 | Nov. 29, 1881 | Q.S. Backus | Bit-stock | ratchet braces |
| 283,844 | Aug. 28, 1883 | C.H. Amidon | Bit-stock | ratchet braces |
| 294,762 | Mar. 11, 1884 | W.R. Clarkson | Ratchet bit-brace | ratchet braces |
| 309,887 | Dec. 30, 1884 | A. Shepard | Ratchet brace with side levers | ratchet braces |
| 344,130 | Jun. 22, 1886 | J.L. Osgood | Bit-brace | |
| 386,261 | Jul. 17, 1888 | J.T. Pedersen | Ratchet Drill Stock | ratchet drills |
| 438,338 | Oct. 14, 1890 | J. Zirikelback | Ratchet bit-brace | ratchet braces |
| 484,654 | Oct. 18, 1892 | W.E. Daily | Screw-driver | eggbeater drills |
| 705,917 | Jul. 29, 1902 | G.E. Gay | Screw-Driver | ratcheting screwdrivers |
| 758,329 | Apr. 26, 1904 | C.E. Mitchell | Ratchet Brace | ratchet braces |
