Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5591635 | Methods and apparatuses for rapid composting with closed air loop circulation for positive control | Richard Nils Young | 1997-01-07 |
| 4781380 | Articulated ring puzzle | — | 1988-11-01 |
| 4412681 | Two dimensional logical toy | — | 1983-11-01 |