Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346565 | Water barrier of water-swellable clay sandwiched between interconnected layers of flexible fabric needled together using a lubricant | — | 1994-09-13 |
| 5346566 | Water barrier of water-swellable clay or other abrasive material sandwiched between interconnected layers of flexible fabric sewn or needled together using a lubricant and/or a liquid adhesive | — | 1994-09-13 |