Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851188 | Method for making a turbine blade having a wear resistant layer sintered to the blade tip surface | Robert P. Schaefer, Walter Gustafson, Kenneth Taylor | 1989-07-25 |
| 4802828 | Turbine blade having a fused metal-ceramic tip | Edward Lee, Robert P. Schaefer, Edward L. Johnson | 1989-02-07 |