Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6150158 | Agricultural product microscreen method and apparatus | Carol L. Bush, Theodore William Frentzel, Jr., Mary Kolean Koeppe, Louis G. Rosanio, Jr. | 2000-11-21 |
| 5950567 | Multiple dosage feeder for animal cage | John E. Sheaffer, Theodore William Frentzel, Jr., Charles Elwood Cover | 1999-09-14 |