Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820953 | Rate of ascent monitor using piezoelectric transducer | Italo De Blasi, Stanley Livshitz | 1989-04-11 |
| 4818884 | Low cost appliance for continuously monitoring levels of ionizing radiation in premises for human occupation | — | 1989-04-04 |