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| Patents Granted on 1957-03-05 | |||||
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| Number | Date | Patentee | Title | Type | |
| D179,799 | Mar. 05, 1957 | R.O. Ernest | Portable electric sander | handheld power sanders | |
| 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 | |