Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5630796 | Method of delivering powder transdermally with needless injector | David F. Sarphie, John Christopher Greenford | 1997-05-20 |
| 5628909 | Membrane filters with corkscrew vortex generating means | — | 1997-05-13 |