Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8747749 | Methods for testing impurity content in a precious metal | Warren D. Kleinfelter | 2014-06-10 |
| 8211366 | Apparatus and methods for testing impurity content in a precious metal | Warren D. Kleinfelter | 2012-07-03 |