| Patents Granted on 1957-04-?? |
Patents 1 -
15
of 29
      |
| Number | Date | Patentee | Title | Type |
| 2,787,054 | Apr. 02, 1957 | G.E. Franck | Readily Adjustable Tube Cutting Means | tubing cutters |
| 2,787,094 | Apr. 02, 1957 | W.F. French | Cutter grinders | cutter grinding |
| 2,787,175 | Apr. 02, 1957 | G.H. Schurger | Rotary Machine Tool Table | rotary tables |
| 2,787,305 | Apr. 02, 1957 | W.F. Hosford, T.A. Hess | Retaining means for power tool gauge | tablesaw accessories |
| GB-771,790 | Apr. 03, 1957 | A.J. Allen | Machine tools having platen transfer means | metalworking machine mechanisms |
| 2,787,796 | Apr. 09, 1957 | J. Rosan | Method of Converting Standard Threads into Locking Threads | machining |
| 2,787,823 | Apr. 09, 1957 | C.R. Rutter, W.L. Kennicott | Tool Holder | insert tool holders |
| 2,787,826 | Apr. 09, 1957 | C.N. Aronson | Work holder | work holding |
| 2,787,865 | Apr. 09, 1957 | M.J. Gross | Honing machine and sizing mechanism therefor | honing machines |
| 2,787,866 | Apr. 09, 1957 | M.J. Gross | Plug type gage for honing machines | honing machines |
| 2,787,963 | Apr. 09, 1957 | L.A. Dolan, B.H. Lundgren | Pump | |
| 2,788,035 | Apr. 09, 1957 | W. Veersma | Planer chip breaker micro control | wood planers |
| 2,788,519 | Apr. 09, 1957 | W.D. Caldwell | Position Indicating Device | measurement gauges |
| GB-772,118 | Apr. 10, 1957 | n. listed | Improvements in Wire Holder for Three-Wire Method of Measuring Threads | thread gages |
| 2,788,675 | Apr. 16, 1957 | E.E. Hosea | Preselect Automatic Change Speed Gear Shift | metalworking speed changing mechanisms |
