| All Patents in class 81/36 |
Patents 31 -
45
of 47
      |
| Number | Date | Patentee | Title | Type |
| 912,886 | Feb. 16, 1909 | S.A. Plough | Angular bit-stock | |
| 953,518 | Mar. 29, 1910 | C.R. Cousino | Bit-brace (geared) | geared braces |
| 978,066 | Dec. 06, 1910 | A.B. Schucker | Carpenter's brace | |
| 988,263 | Mar. 28, 1911 | O.B. Hanson | Attachment for bit braces | geared braces |
| 993,140 | May 23, 1911 | W.C. Allyn | Brace | |
| 1,006,932 | Oct. 24, 1911 | E.C. Gladfelter | Breast drill attachment | |
| 1,029,028 | Jun. 11, 1912 | D. Redmon | Boring brace | |
| 1,031,540 | Jul. 02, 1912 | P.R. Duchemin | Attachment for carpenters braces | |
| 1,148,365 | Jul. 27, 1915 | J. Duval | Speed Drill | geared braces |
| 1,212,480 | Jan. 16, 1917 | S.N. Hall, C.M. Peterson | Two-speed mechanism via enclosed gear train | |
| 1,212,481 | Jan. 16, 1917 | S.N. Hall | Two-speed mechanism via enclosed gear train | |
| 1,264,922 | May 07, 1918 | J. Harris | Adjustable tool | |
| 1,286,231 | Dec. 03, 1918 | E. Cliffgard | Gear-driven bit brace | |
| 1,294,216 | Feb. 11, 1919 | J.P. Zarek | Changeable-speed brace | geared braces |
| 1,395,876 | Nov. 01, 1921 | W.N. Tiencken | Brace | geared braces |
