| Patents for Donn Twitchell |
Patents 16 -
25
of 25
      |
| Number | Date | Patentee | Title | Type |
| 456,830 | Jul. 28, 1891 | M. Martin | Machine Wrench | tire bolt wrenches |
| 456,860 | Jul. 28, 1891 | H.R. Spencer | Nipple Holder | |
| 459,648 | Sep. 15, 1891 | W. Potter | Instrument for Describing Outlines of Objects | scribes |
| 488,158 | Dec. 13, 1892 | D.C. Wiest | Wrench | ratchet wrenches |
| 513,594 | Jan. 30, 1894 | W.A. Papoun | Wrench | quick adjust wrenches |
| 572,035 | Nov. 24, 1896 | W.C. Stokes | Wrench | screw adjust wrenches |
| 601,506 | Mar. 29, 1898 | C.D. Eames | Tongs | pipe wrenches |
| 626,604 | Jun. 06, 1899 | F.K. Gaff | Mechanical Device | bar and pipe clamps |
| 636,673 | Nov. 07, 1899 | R. Klatt | Wrench | quick adjust wrenches |
| 652,573 | Jun. 26, 1900 | A.S. Williamson | Fuse Waterproof Detonator Crimper | pliers |
