| All Patents in class 470/80 |
Patents 31 -
42
of 42
      |
| Number | Date | Patentee | Title | Type |
| 2,310,992 | Feb. 16, 1943 | J.R. Proksa | Boring device | boring bars |
| 2,311,591 | Feb. 16, 1943 | R.M. Bacon, W.F. Groene | Step Threading Mechanism | metalworking machine mechanisms |
| 2,317,099 | Apr. 20, 1943 | W.F. Groene, H.J. Siekmann | Step threading machine | gunsmith |
| 2,322,127 | Jun. 15, 1943 | W.F. Groene | Vertical circular shaping machine | metal shapers |
| 2,527,397 | Oct. 24, 1950 | X.F. Castelli | Adjusting Device for Transverse Movements of a Parallel Lathe Tool, More Particularly for Thread Cutting | metalworking machine mechanisms |
| 2,533,254 | Dec. 12, 1950 | E.B. Whigam | Lathe Tool | lathe tool holders and tool posts |
| 2,588,205 | Mar. 04, 1952 | X.F. Castelli | Control Mechanism for Screw Machines | machine tool controls |
| 2,596,723 | May 13, 1952 | H.H. Ranney | Thread-cutting Mechanism | metalworking machine mechanisms |
| 2,717,401 | Sep. 13, 1955 | A.C. Menzies, W. Zehden, G.E. Fensom | Device for Cutting Very Fine Screw Threads | screwcutting lathes |
| 2,778,037 | Jan. 22, 1957 | P.E. Renoux | Screw Cutting Machine for Progressively Cutting Single or Multiple Pitch Thread | screwcutting lathes |
| 2,848,788 | Aug. 26, 1958 | Z. Goglanian | Tool Holder | lathe tool holders and tool posts |
| 2,882,760 | Apr. 21, 1959 | L.A. Leifer | Infinitey Variable Incremental Feed Control | metalworking speed changing mechanisms |
