Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4324244 | Two-chamber underwater drainage apparatus with oneway outflow valve and dual hangar retainers | Leonard D. Kurtz | 1982-04-13 |
| D263168 | Portable drainage device | Leonard D. Kurtz | 1982-02-23 |
| 4312351 | Drainage device with separate outflow chamber | Leonard D. Kurtz | 1982-01-26 |