Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5018743 | Board game | Steven Maier | 1991-05-28 |
| 4690582 | Connecting element for structural framework | Bruno NEUMANN, Ludwig R. Schaafhausen | 1987-09-01 |
| 4640051 | Adjustment mechanism for tiltable glazed sashes | Ralf Storandt, Heinz R. Guenther, by Renate Guenther, legal representative, by Sabine Guenther, legal representative | 1987-02-03 |