Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4420316 | Filter apparatus and method of making it | Rodney I. Frost | 1983-12-13 |
| 4417908 | Honeycomb filter and method of making it | — | 1983-11-29 |
| 4329162 | Diesel particulate trap | — | 1982-05-11 |