Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947692 | Apparatus for detecting positional changes in relation to a vertical reference direction in buildings or in building subsoil | — | 1990-08-14 |
| 4739652 | Method of, and tubing and support apparatus for, arranging a tubing assembly for measuring purposes | Kalman Kovari, Christian Amstad | 1988-04-26 |
| 4643024 | Method of, and measuring tube and measuring probe for, measuring fluid pressure in a sealed bore hole | Kalman Kovari | 1987-02-17 |
| 4327590 | Method and apparatus for determining shifts at terrain and in structures | Kalman Kovari, Christian Amstad | 1982-05-04 |