Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4554471 | Electric motor having a U-shaped stator iron | Hugo Schemmann, Jan de Boer | 1985-11-19 |
| 4503346 | Electric motor having a stator iron of a bent shape | Hugo Schemmann | 1985-03-05 |
| 4500825 | Self-starting single-phase synchronous motor | Hugo Schemmann | 1985-02-19 |