Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4362914 | Electrical switch apparatus | Unal Bayrak, Robert Prohl, Walter Stecker | 1982-12-07 |
| 4316138 | Electric switching section | Unal Bayrak, Walter Stecker | 1982-02-16 |
| 4250535 | Electric switch gear section | Unal Bayrak, Robert Prohl, Gerhard Schmidt, Walter Stecker | 1981-02-10 |