| All Patents in class 470/198 |
Patents 31 -
42
of 42
      |
| Number | Date | Patentee | Title | Type |
| 1,862,337 | Jun. 07, 1932 | G.W. Emrick | Tap, drill, and similar tool | drill press chucks |
| 1,875,484 | Sep. 06, 1932 | F. Nigra | Screw Extractor | screw extractors |
| 2,096,754 | Oct. 26, 1937 | A. Oberhoffken | Machine Tool | milling machines |
| 2,098,675 | Nov. 09, 1937 | H.G. Procunier | Tool-holding chuck and collet therefor | tap and die holders |
| 2,105,330 | Jan. 11, 1938 | W.H. Pagenkopf | Tool Holder | metalworking machine tool holders |
| 2,206,047 | Jul. 02, 1940 | J.E. Poorman | Tap and Die Holder | tap and die holders |
| 2,253,491 | Aug. 26, 1941 | H.F. Bakewell | Threading tool | taps and dies |
| 2,307,680 | Jan. 05, 1943 | G. Hohwart | Tap Structure | taps and dies |
| 2,313,312 | Mar. 09, 1943 | H.F. Bakewell | Toolholder | drill press chucks |
| 2,379,992 | Jul. 10, 1945 | A.M. Sasgen | Work supporting and finishing apparatus | tool making |
| 2,574,016 | Nov. 06, 1951 | F.G. Burg | Flexible toolholder | drill presses |
| 4,640,652 | Feb. 03, 1987 | J.C. Rivera, Jr. | Coolant Delivery System | coolant apparatus |
