Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799354 | Turbopropeller or turbofan gas turbine engine | — | 1989-01-24 |
RM
Ronald A. Midgley
Overall (1989): #62,071 of 140,708Top 45%
1
Patents 1989