Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867770 | Filter cartridge | — | 1989-09-19 |
| D299765 | Helmet or similar article | Stephen B. Lewis, Cyril Smith | 1989-02-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867770 | Filter cartridge | — | 1989-09-19 |
| D299765 | Helmet or similar article | Stephen B. Lewis, Cyril Smith | 1989-02-07 |