Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5644220 | Process and apparatus for measuring charge quantity flowing in a vacuum | Waelchli Urs, Boesch Martin | 1997-07-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5644220 | Process and apparatus for measuring charge quantity flowing in a vacuum | Waelchli Urs, Boesch Martin | 1997-07-01 |