Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877025 | Tracheostomy tube valve apparatus | — | 1989-10-31 |
| 4799496 | Guide wire handle | Thomas E. Hargreaves | 1989-01-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877025 | Tracheostomy tube valve apparatus | — | 1989-10-31 |
| 4799496 | Guide wire handle | Thomas E. Hargreaves | 1989-01-24 |