Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8202503 | Visual, continuous and simultaneous measurement of solution ammonia and hydrogen ion concentration | David Putnam, Jason A. Putnam | 2012-06-19 |
| 7790113 | Visual, continuous and simultaneous measurement of solution ammonia and hydrogen ion concentration | David Putnam, Jason A. Putnam | 2010-09-07 |