Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6642641 | Apparatus for measuring total pressure and partial pressure with common electron beam | Louis C. Frees | 2003-11-04 |
| RE38138 | Method for linearization of ion currents in a quadrupole mass analyzer | David H. Holkeboer | 2003-06-10 |