Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5408313 | Optical interface coupler and system for photometric analysis | Michael J. Ponstingl, Robert C. Kessler | 1995-04-18 |
| 5241368 | Fiber-optic probe for absorbance and turbidity measurement | Michael J. Ponstingl, Robert C. Kessler | 1993-08-31 |
| 4637730 | Optical and electronically compared absorptiometer | Michael J. Ponstingl, Robert C. Kessler | 1987-01-20 |