Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4504843 | Surface structure for the drum of a recording device | Bernd Schmidt, Hans-Peter Spannehl | 1985-03-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4504843 | Surface structure for the drum of a recording device | Bernd Schmidt, Hans-Peter Spannehl | 1985-03-12 |