| All Patents in class 76/108.6 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 6,305 | Apr. 10, 1849 | N.C. Sanford, L.B. Smith | Machine for regulating the twist and diameter of screw-augers | tool making machines |
| 8,032 | Apr. 08, 1851 | H. Strait | Saw-set | saw sets |
| 10,744 | Apr. 04, 1854 | A. Pease | Drill for metal gun-barrels | drill bits |
| 189,265 | Apr. 03, 1877 | J.C. Richardson | Improvement in Gimlets and Twist-Drills | making drills and augers |
| 240,984 | May 03, 1881 | T.P. Farmer | Art of Manufacturing Twist Drills | making drills and augers |
| 341,084 | May 04, 1886 | F.E. Whitney | Manufacture of Twist-Drills | making drills and augers |
| 392,119 | Oct. 30, 1888 | M. Hardsocg | Method of Twisting Augers | making drills and augers |
| 432,636 | Jul. 22, 1890 | S. Moore | Machine for Straightening and Sizing Twist Drills | making drills and augers |
| 1,285,589 | Nov. 26, 1918 | H.L. Barnes | Method of Making Drills | making drills and augers |
| 2,129,417 | Sep. 06, 1938 | C.G. Gase | End mill | milling machine cutters |
| 5,367,836 | Nov. 29, 1994 | K.H. Allen | Automatic Drill Loader | tool changers and storage mechanisms |
