Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830444 | Extrusion die for biodegradable material with die orifice modifying device and flow control device | Donald R. Bittner | 2004-12-14 |
| 6805823 | Resilient biodegradable packaging materials | Donald R. Bittner | 2004-10-19 |