Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848141 | Method for continuous determination of the elastic stiffness of contact between two bodies | John B. Pethica | 1989-07-18 |
| 4806305 | Ductile nickel-silicon alloy | — | 1989-02-21 |