Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847171 | Molybdenum oxide electrodes for thermoelectric generators | — | 1989-07-11 |
| 4820392 | Method of increasing useful life of tool steel cutting tools | David Moskowitz, David W. Hoffman | 1989-04-11 |