Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863515 | Tool steel | Borje Johansson | 1989-09-05 |
| 4809500 | Transient control system for gas turbine engine | — | 1989-03-07 |
WR
William C. Roberts
Uddeholm Tooling Aktiebolag: 1 patents #1 of 2Top 50%
Overall (1989): #12,978 of 140,708Top 10%
2
Patents 1989