Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639245 | Method of manufacturing a teaching tool including post-consumer material for use in educating in the benefits of recycling | Manny Greenfield | 1997-06-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639245 | Method of manufacturing a teaching tool including post-consumer material for use in educating in the benefits of recycling | Manny Greenfield | 1997-06-17 |