| All Patents in class 82/122 |
Patents 16 -
30
of 38
      |
| Number | Date | Patentee | Title | Type |
| 1,248,276 | Nov. 27, 1917 | F.J. Curtis | Machine-tool | horizontal boring mills |
| 1,410,450 | Mar. 21, 1922 | E.P. Bullard, Jr. | Hand Operating Means for Boring Mills | metalworking machine mechanisms |
| 1,469,360 | Oct. 02, 1923 | J.K. Cullen | Clamp and grip chuck | car wheel lathes |
| 1,543,236 | Jun. 23, 1925 | W.T. Sears | Rotating table for radial drills | radial drill presses |
| 1,670,772 | May 22, 1928 | F.S. Jones | Vertical boring mill | vertical boring mills |
| 1,804,971 | May 12, 1931 | E.P. Bullard, Jr. | Multiple Spindle Center Turning Machine | |
| 1,940,403 | Dec. 19, 1933 | L.A. Dumser, C.J. Schroeder | Lathe | |
| 1,940,404 | Dec. 19, 1933 | L.A. Dumser | Feeding mechanism for machine tools | |
| 1,999,393 | Apr. 30, 1935 | E.C. Bullard | Metal Working Apparatus | |
| 2,044,496 | Jun. 16, 1936 | E.C. Bullard | Stationary Tool Metal Working Apparatus | |
| 2,083,023 | Jun. 08, 1937 | W.M. Fairbairn, A.M. Johnson | Machine tool | multiple spindle drill presses |
| 2,217,938 | Oct. 15, 1940 | J.B. Armitage | Milling Machine Attachment Supporting Apparatus | milling machine accessories |
| 2,540,186 | Feb. 06, 1951 | E.P. Bullard, G.R. Appelberg, E.G. Bjorklund, E.N. Cowell, C.M. Grinage, E.H. Johnson, P.H. Lange, F.H. Mussler | Machine Tool | |
| 2,603,321 | Jul. 15, 1952 | J.B. Lukey, J.N. Flannery, J.B. Armitage | Machine Tool Control Mechanism | milling machines |
| 2,682,697 | Jul. 06, 1954 | W.B. Wigton, J. Daugherty | Machine Tool | vertical boring mills |
