| All Patents in class 279/97 |
Patents 16 -
30
of 42
      |
| Number | Date | Patentee | Title | Type |
| 830,176 | Sep. 04, 1906 | B.F. Rodes | Tool Holder | tool holders |
| 902,387 | Oct. 27, 1908 | T.J. Fegley | Detachable-blade screw-driver | screwdrivers |
| 1,010,755 | Dec. 05, 1911 | F.S. Harrington | Pick | pick axes |
| 1,033,661 | Jul. 23, 1912 | C. Berry | Tool Handle Holder | tool handles |
| 1,034,723 | Aug. 06, 1912 | A.C. Schuerrmann, H. Mueller | Tool-retaining device for boring-bars | boring bars |
| 1,458,802 | Jun. 12, 1923 | G.W. Bufford | Tool Holder and Tool | |
| 1,458,973 | Jun. 19, 1923 | G.W. Bufford | Tool Holder and Tool | lathe tool holders and tool posts |
| 1,496,067 | Jun. 03, 1924 | E. Penberthy | Tool Holder and Retainer | drilling and boring tool holders |
| 1,502,528 | Jul. 22, 1924 | L. Reulbach | Extensible Tool Holder | drilling and boring tool holders |
| 1,535,941 | Apr. 28, 1925 | G.S. Myers | Means of securing bit to a drill spindle. | |
| 1,564,342 | Dec. 08, 1925 | O.P. Wodack, J.J. Bebhardt | Portable power-driven tool | handheld power drivers |
| 1,605,142 | Nov. 02, 1926 | J.M. Redinger | Milling Cutter Holder | metalworking machine tool holders |
| 1,702,810 | Feb. 19, 1929 | J.F. Buhr | Tapping Chuck | drill press chucks |
| 1,861,504 | Jun. 07, 1932 | A.C. Maxfield | Adapter for Machine Tools | milling machine accessories |
| 1,954,049 | Apr. 10, 1934 | R.K. Jeffery | Tool Holder | tool holders |
