| All Patents in class 279/16 |
Patents 31 -
45
of 72
      |
| Number | Date | Patentee | Title | Type |
| 1,359,103 | Nov. 16, 1920 | J.F. Randa | Tool Holder | metalworking machine tool holders |
| 1,369,491 | Feb. 22, 1921 | F.W. Straehle | Floating Tool Holder | drilling and boring tool holders |
| 1,376,791 | May 03, 1921 | F.W. Franklin, W.W. Baker | Self Centering Tool Holder | metalworking machine tool holders |
| 1,398,679 | Nov. 29, 1921 | C.J. Clark | Tool Holder | drilling and boring tool holders |
| 1,400,063 | Dec. 13, 1921 | T. Hinton | Tool Holder | drilling and boring tool holders |
| 1,406,220 | Feb. 14, 1922 | G.F. Pickett | Tool Holder | drilling and boring tool holders |
| 1,485,671 | Mar. 04, 1924 | G.W. Emrick | Chuck | drill chucks |
| 1,506,331 | Aug. 26, 1924 | I. Benkö | Tool Holder | drilling and boring tool holders |
| 1,513,647 | Oct. 28, 1924 | P. Spiritus | Floating Tool Holder | metalworking machine tool holders |
| 1,564,342 | Dec. 08, 1925 | O.P. Wodack, J.J. Bebhardt | Portable power-driven tool | handheld power drivers |
| 1,702,810 | Feb. 19, 1929 | J.F. Buhr | Tapping Chuck | drill press chucks |
| 1,759,101 | May 20, 1930 | J.E. Daniels | Adjustable Floating Tool Holder | lathe tool holders and tool posts |
| 1,787,932 | Jan. 06, 1931 | A.F. Breitenstein | Floating Tool Holder | tap and die holders |
| 1,810,503 | Jun. 16, 1931 | G.H. Thomas | Floating Reamer Holder | drilling and boring tool holders |
| 1,823,032 | Sep. 15, 1931 | G.A. De Vlieg | Tool Holder | drilling and boring tool holders |
