Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848778 | Twist seal for high-pressure vessels such as space shuttle rocket motors | — | 1989-07-18 |
GP
George L. von Pragenau
Overall (1989): #111,012 of 140,708Top 80%
1
Patents 1989