| All Patents in class 81/37 |
Patents 16 -
30
of 32
      |
| Number | Date | Patentee | Title | Type |
| 641,685 | Jan. 23, 1900 | C.A. Fogg | Right-Angled Boring-Bit Brace | drill accessories |
| 650,795 | May 29, 1900 | W.T. Maxwell, G.J. Spahn | Boring implement | |
| 661,419 | Nov. 06, 1900 | S. McClellan | Universal brace and drill | |
| 682,263 | Sep. 10, 1901 | C.S. Du Mont | Bit-brace | corner braces |
| 783,895 | Feb. 28, 1905 | J.M. Ribert | Bit-brace | |
| 789,536 | May 09, 1905 | A.D. Goodell | Corner-brace | braces |
| 838,677 | Dec. 18, 1906 | J.H. Ackermann | Angle bit-brace | |
| 859,059 | Jul. 02, 1907 | C.J. Haeberli, H.E. Schmidt | Angular bit-brace | braces |
| 890,801 | Jun. 16, 1908 | J.A. Schmidt | Bit-brace attachment | |
| 912,886 | Feb. 16, 1909 | S.A. Plough | Angular bit-stock | |
| 978,066 | Dec. 06, 1910 | A.B. Schucker | Carpenter's brace | |
| 993,140 | May 23, 1911 | W.C. Allyn | Brace | |
| 1,006,932 | Oct. 24, 1911 | E.C. Gladfelter | Breast drill attachment | |
| 1,239,847 | Sep. 11, 1917 | G. Townill | Universal Screw-Driver | screwdriver mechanisms |
| 1,264,922 | May 07, 1918 | J. Harris | Adjustable tool | |
