Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869870 | Aluminum-lithium alloys with hafnium | Philip E. Bretz, John E. Jacoby | 1989-09-26 |
| 4861391 | Aluminum alloy two-step aging method and article | Edward L. Colvin, Asuri K. Vasudevan, Brian A. Cheney | 1989-08-29 |
| 4832910 | Aluminum-lithium alloys | Philip E. Bretz, John E. Jacoby | 1989-05-23 |