Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6170403 | Boat for spill water raft rides | — | 2001-01-09 |
| 6074306 | Amusement park vehicle for the physically disabled | — | 2000-06-13 |
| 5738017 | Rail vehicle reverse movement prevention assembly | — | 1998-04-14 |
| 4652349 | Baths for the electrodeposition of tin-graphite or tin/lead-graphite layers | Klaus Otto | 1987-03-24 |