Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5057285 | Gas generator/indicator unit adapted for use in an upright position | William E. Belt, C. Frederick Avery | 1991-10-15 |
| D312862 | Manual vacuum filtration container for liquid specimens | — | 1990-12-11 |
| 4792398 | Manual vacuum filtration device | — | 1988-12-20 |