| Patents Granted on 1912-05-21 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| RE13,421 | May 21, 1912 | R.H. Hazeltine | Machine for Reseating Valves | valve grinding tools |
| 1,026,661 | May 21, 1912 | F.H. Dickson | Wrench | pipe wrenches |
| 1,026,866 | May 21, 1912 | J.N. Norton, E. Carlson | Siding-Marker | clapboard markers |
| 1,026,887 | May 21, 1912 | J.H. Van Deventer | Rotary Engine | rotary steam engines |
| 1,026,904 | May 21, 1912 | J. Burke | Electric motor | blowers |
| 1,026,932 | May 21, 1912 | F.E. Seddon | Universal Angle Plate | angle bars and angle plates |
| 1,026,975 | May 21, 1912 | C.A. Devero | Tire Setting Machine | steel tire shrinkers |
| 1,027,137 | May 21, 1912 | L. Mayer | Knuckle connection and drive for vehicle-wheels | motor vehicles |
| 1,027,161 | May 21, 1912 | A. Vietor | Gripping Device | |
