| Patents Granted on 1957-03-?? |
Patents 1 -
15
of 32
      |
| Number | Date | Patentee | Title | Type |
| D179,799 | Mar. 05, 1957 | R.O. Ernest | Portable electric sander | handheld power sanders |
| CA-537,861 | Mar. 05, 1957 | W.F. Lamison | Cutlery sharpener | sharpening apparatus |
| 2,783,527 | Mar. 05, 1957 | A. Davidson | Tool Holder | metalworking machine tool holders |
| 2,783,542 | Mar. 05, 1957 | J.E. Hastings | Height Gauge | height gages |
| 2,783,664 | Mar. 05, 1957 | V.C. Johnson | Turret Attachment for Lathes | lathe tool holders and tool posts |
| 2,783,782 | Mar. 05, 1957 | S.G. Blumensaadt, J.C. Lincoln | Wire Bending Machine | spring making machines |
| 2,783,790 | Mar. 05, 1957 | T.B. Keesling | Power operated tool attachment for electric drills and the like | handheld power tool accessories |
| 2,783,792 | Mar. 05, 1957 | T.B. Keesling | Free ended saw blade for a power operated saw | sawblades |
| CA-538,112 | Mar. 12, 1957 | J.A. Senn, H.R. Schlichting | Machine tool positioning mechanism | metalworking machine mechanisms |
| 2,784,482 | Mar. 12, 1957 | A.N. Emmons | Abrading element | cutterheads |
| 2,784,494 | Mar. 12, 1957 | F.H. Czaplinski, E.H. Aldeborgh | Inside and Outside Thread Gage | |
| 2,784,495 | Mar. 12, 1957 | W.J. Croshier | Combination Dial Snap and Thickness Gage | |
| 2,784,647 | Mar. 12, 1957 | K.H. Hendry, F.R. Swanson | Bucket milling machine | |
| 2,784,752 | Mar. 12, 1957 | H.R. Emrick | Multiple purpose machine tool | scrollsaws |
| 2,784,754 | Mar. 12, 1957 | V. Berthelsen | Hydraulic systems | veneer machines |
