Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6431229 | Solventless purgeable diaphragm valved manifold for low vapor pressure chemicals | Charles Michael Birtcher, Thomas Andrew Steidl, Gil Vivanco, Cynthia Lee Trent, David Silva | 2002-08-13 |
| 6341615 | Self-cleaning vacuum purge system | David Silva | 2002-01-29 |