| All Patents in class 403/118 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 785,351 | Mar. 21, 1905 | W.W. Doolittle | Tool Holder | drilling and boring tool holders |
| 1,651,777 | Dec. 06, 1927 | W.A. Peck | Extension-Bit Holder | drill bit extensions |
| 1,934,910 | Nov. 14, 1933 | J.F. Buhr | Collet Means | drill press accessories |
| 2,078,192 | Apr. 20, 1937 | R.G. Ellis, J.F. Buhr | Tool Holder | drill press accessories |
| 2,182,411 | Dec. 05, 1939 | J.A. Scully, B.F. Rosenberg | Tool Holder | drilling and boring tool holders |
| 3,572,197 | Mar. 23, 1971 | R.M. Ortlieb | Adjustable Toolholder | drilling and boring tool holders |
