| All Patents in class 279/91 |
Patents 16 -
30
of 35
      |
| Number | Date | Patentee | Title | Type |
| 333,192 | Dec. 29, 1885 | J. Balz | Brace/Drill Chuck | brace chucks |
| 348,815 | Sep. 07, 1886 | L. Bailey | Screwdriver | screwdrivers |
| 366,908 | Jul. 19, 1887 | J.S. Winsor, Jr. | Holder for Reaming Tools | tool holders |
| 441,071 | Nov. 18, 1890 | A. Muir | Chuck | drill press chucks |
| 650,795 | May 29, 1900 | W.T. Maxwell, G.J. Spahn | Boring implement | |
| 676,742 | Jun. 18, 1901 | Z.T. Furbish | Chuck | drill chucks |
| 717,199 | Dec. 30, 1902 | G.H. Hollm | Tapping Fixture | tap and die holders |
| 954,046 | Apr. 05, 1910 | W.A. Peck | Extension bit-holder | drill bit extensions |
| 973,542 | Oct. 25, 1910 | A. Muehlmatt | Boring-head for lathes, milling-machines, and the like | boring heads |
| 1,018,172 | Feb. 20, 1912 | S.T. Downs | Service Box Key | |
| 1,034,723 | Aug. 06, 1912 | A.C. Schuerrmann, H. Mueller | Tool-retaining device for boring-bars | boring bars |
| 1,041,338 | Oct. 15, 1912 | C.A. Palmgren | Drill and chuck | drill chucks |
| 1,041,858 | Oct. 22, 1912 | D.J. Normoyle | Tap Wrench | tap wrenches and die stocks |
| 1,438,040 | Dec. 05, 1922 | L.W. Jones | Tool Holder | drilling and boring tool holders |
| 1,501,465 | Jul. 15, 1924 | W.A. Peck | Tool holder | |
