| All Patents in class 279/105.1 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 785,351 | Mar. 21, 1905 | W.W. Doolittle | Tool Holder | drilling and boring tool holders |
| 854,742 | May 28, 1907 | C.E. Hill | Adjustable extension bit holder | drill bit extensions |
| 1,378,290 | May 17, 1921 | J.H. Smith | Adjustable Tool Holder | drilling and boring tool holders |
| 1,629,547 | May 24, 1927 | J.H. Smith | Tool Holder | drilling and boring tool holders |
| 1,845,123 | Feb. 16, 1932 | J.F. Buhr | Collet Means | drill press accessories |
| 1,861,246 | May 31, 1932 | J.H. Smith | Adjustable Tool Holder | drilling and boring tool holders |
| 1,934,910 | Nov. 14, 1933 | J.F. Buhr | Collet Means | drill press accessories |
| 1,973,943 | Sep. 18, 1934 | J.F. Buhr | Socket Collet Structure | drill press accessories |
| 1,975,215 | Oct. 02, 1934 | U.G. Thomas | Tool Holder | drilling and boring tool holders |
| 2,043,598 | Jun. 09, 1936 | A. Subia | Adjustable Tool Holder | drilling and boring tool holders |
| 2,078,192 | Apr. 20, 1937 | R.G. Ellis, J.F. Buhr | Tool Holder | drill press accessories |
| 2,152,302 | Mar. 28, 1939 | J.F. Buhr | Lock for Tool Holders | drill press accessories |
| 2,182,411 | Dec. 05, 1939 | J.A. Scully, B.F. Rosenberg | Tool Holder | drilling and boring tool holders |
| 2,849,902 | Sep. 02, 1958 | C.B. De Vlieg, A.N. Sweeny | Presetting boring bar and tool holder | facing heads |
