Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4362914 | Electrical switch apparatus | Erich Adolph, Unal Bayrak, Walter Stecker | 1982-12-07 |
| 4250535 | Electric switch gear section | Erich Adolph, Unal Bayrak, Gerhard Schmidt, Walter Stecker | 1981-02-10 |