Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5711306 | One-use device for directly taking a sample of expired air from a subject | — | 1998-01-27 |
| 4916313 | Method and apparatus for the determination of isotopic composition | Keith Hall, Philip A. Freedman, Elizabeth J. Jumeau, Christiane Pachiaudi, Jean P. Riou | 1990-04-10 |
| 4866270 | Method and apparatus for the determination of isotopic composition | Keith Hall, Philip A. Freedman, Elizabeth J. Jumeau, Christiane Pachiaudi | 1989-09-12 |