| Patents for Elwin R. Hyde |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 405,706 | Jun. 25, 1889 | E.R. Hyde | Surface Grinding or Planing Machine | surface grinders |
| 694,101 | Feb. 25, 1902 | E.R. Hyde | Rotary Engine | rotary steam engines |
| 1,133,475 | Mar. 30, 1915 | E.R. Hyde | Grinding Wheel | grinding wheels |
| 1,525,994 | Feb. 10, 1925 | E.R. Hyde | Machine Drive | metalworking machine mechanisms |
| 1,553,167 | Sep. 08, 1925 | E.R. Hyde | Swing Frame Grinder | grinding machines |
| 1,582,608 | Apr. 27, 1926 | E.R. Hyde | Sectional Grinding Wheel | grinder wheels |
| 1,589,855 | Jun. 22, 1926 | E.R. Hyde | Sectional Grinding Wheel | grinding wheels |
