Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6268602 | Method for manufacturing calibrated radiation dosimeter | Henry Seiwatz, Carl A. Listl, David F. Lewis | 2001-07-31 |
| 5777341 | Method for manufacturing calibrated radiation dosimeter | Henry Seiwatz, Carl A. Listl, David F. Lewis | 1998-07-07 |
| 5767520 | Radiation dosimetry method and apparatus | David F. Lewis, Henry Seiwatz, Carl A. Listl | 1998-06-16 |
| 5637876 | Radiation dosimetry method and apparatus | David F. Lewis, Henry Seiwatz, Carl A. Listl | 1997-06-10 |
| 5359200 | Radiation dosimeter | David F. Lewis, Sotiri A. Papoulias | 1994-10-25 |
| 5075004 | Filter bag seal | Moshe Gershenson, John Dragasevich | 1991-12-24 |