Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4980644 | Earthquake detecting magnetometer with movable magnetic compass needle and method of using same | — | 1990-12-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4980644 | Earthquake detecting magnetometer with movable magnetic compass needle and method of using same | — | 1990-12-25 |