| Patents for Master Electric Co. |
Patents 1 -
15
of 35
      |
| Number | Date | Patentee | Title | Type |
| 1,640,900 | Aug. 30, 1927 | E.P. Larsh | Short circuiter | repulsion start induction run motors |
| 1,678,517 | Jul. 24, 1928 | E.P. Larsh | Short circuiting device for motor commutators | repulsion start induction run motors |
| 1,685,549 | Sep. 25, 1928 | E.P. Larsh | Short circuiter | repulsion start induction run motors |
| 1,699,792 | Jan. 22, 1929 | E.P. Larsh | Quick-acting switch | electric switches |
| 1,723,360 | Aug. 06, 1929 | E.P. Larsh | Pump | |
| 1,735,579 | Nov. 12, 1929 | E.P. Larsh | Short-circuiting device for motor commutators | repulsion start induction run motors |
| 1,779,006 | Oct. 21, 1930 | E.P. Larsh | Short circuiter | repulsion start induction run motors |
| 1,792,645 | Feb. 17, 1931 | E.P. Larsh | Armature bearing for electric motors | motor bearings |
| RE18,093 | Jun. 09, 1931 | E.P. Larsh | Short circuiting device for motor commutators | repulsion start induction run motors |
| 1,895,288 | Jan. 24, 1933 | E.P. Larsh | Bearing mounting | motor armatures |
| 1,896,869 | Feb. 07, 1933 | E.P. Larsh | Electric fan | |
| 1,939,399 | Dec. 12, 1933 | E.P. Larsh | Electric fan | |
| 1,950,675 | Mar. 13, 1934 | D.H. Heynau | Friction gear for stepless changing the rotation of a driven shaft | industrial machine speed and direction changing mechanisms |
| 1,983,091 | Dec. 04, 1934 | E.P. Larsh | Variable-speed induction motor | induction motors |
| 1,993,449 | Mar. 05, 1935 | E.P. Larsh | Electric motor | shaded pole induction motors |
