Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4272699 | Electron impact ion source with field emission cathode | William M. Holber, Jan P. Toennies | 1981-06-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4272699 | Electron impact ion source with field emission cathode | William M. Holber, Jan P. Toennies | 1981-06-09 |