| All Patents in class 279/16 |
Patents 46 -
60
of 72
      |
| Number | Date | Patentee | Title | Type |
| 1,831,382 | Nov. 10, 1931 | E. Gairing | Full Floating Universal Tool Holder | drilling and boring tool holders |
| 1,883,611 | Oct. 18, 1932 | G.A. De Vlieg | Tool Holder | drilling and boring tool holders |
| 1,948,698 | Feb. 27, 1934 | J.M. Christman | Tool Holder | drilling and boring tool holders |
| 2,017,332 | Oct. 15, 1935 | E.A. Zempel | Tool Holder | drilling and boring tool holders |
| 2,042,648 | Jun. 02, 1936 | W.M. Zeigler | Floating Tool Holder | drilling and boring tool holders |
| 2,140,303 | Dec. 13, 1938 | F.R. Swanson | Chuck | |
| 2,188,205 | Jan. 23, 1940 | H.A. Osborne | Floating Tool Holder | drilling and boring tool holders |
| 2,288,907 | Jul. 07, 1942 | O. Klute | Tool Holder for Reamers | metalworking machine tool holders |
| 2,465,923 | Mar. 29, 1949 | L.W. Premo | Work Driver | metal lathe chucks |
| 2,525,646 | Oct. 10, 1950 | F.G. Burg | Flexible toolholder | drill presses |
| 2,533,758 | Dec. 12, 1950 | B. Better, J.W. Lehde | Floating Holder | drilling and boring tool holders |
| 2,574,016 | Nov. 06, 1951 | F.G. Burg | Flexible toolholder | drill presses |
| 2,657,064 | Oct. 27, 1953 | E.P. Bullard, III, A.A. Tomenceak | Floating Chuck | metal lathe chucks |
| 2,657,065 | Oct. 27, 1953 | M. De Haas, W.F. Wilhelm | Automatic Chuck | metal lathe chucks |
| 2,767,564 | Oct. 23, 1956 | F.L. Green | Tool Holder | drilling and boring tool holders |
