| Patents Granted on 1931-05-19 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| CA-311,578 | May 19, 1931 | F.W. Wappat | Mortising machine | mortising machines |
| 1,805,588 | May 19, 1931 | R.E. Manley | Hydraulic jack | vehicle mechanic |
| 1,805,831 | May 19, 1931 | V.J. Mathieu | Re-toothing machine | tool making machines |
| 1,805,907 | May 19, 1931 | A.A. Dennis | Veneer taping machine | veneer machines |
| 1,806,106 | May 19, 1931 | F.J. Lapointe | Vertical pull broaching machine | broaching machines |
| 1,806,301 | May 19, 1931 | J.L. Valley | Pressure controlled valve | pressure regulators |
| 1,806,433 | May 19, 1931 | G.E. Weaver, A.J. Vettel | Wreck crane | vehicle mechanic |
| 1,806,528 | May 19, 1931 | T.J. Fegley, G.O. Leopold | Portable power-driven saw | handheld circular saws |
