Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883440 | Electrified toy building block with zig-zag current carrying structure | — | 1989-11-28 |
| 4861306 | Toy cog railway | Heniz Looser, Werner Tanner | 1989-08-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883440 | Electrified toy building block with zig-zag current carrying structure | — | 1989-11-28 |
| 4861306 | Toy cog railway | Heniz Looser, Werner Tanner | 1989-08-29 |