Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9150231 | Maintenance and retrieval cart | Richard Vincent Armin De Jong, Jerry Michilsen | 2015-10-06 |
| 5439232 | Educational card game | — | 1995-08-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9150231 | Maintenance and retrieval cart | Richard Vincent Armin De Jong, Jerry Michilsen | 2015-10-06 |
| 5439232 | Educational card game | — | 1995-08-08 |