Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5167819 | Canteen having a removably mounted filter device | Michael R. McCray | 1992-12-01 |
| 5156737 | Orally operable, portable, water filtration device | Michael R. McCray | 1992-10-20 |
| 5122272 | Drinking water supply container having a removably mounted filter device | Michael R. McCray | 1992-06-16 |