Issued Patents 1997
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680989 | Adjustable weir for liquid distribution systems | Richard F. Plachy | 1997-10-28 |
| 5666768 | Collapsible handle assembly for concrete covers | — | 1997-09-16 |
| 5655564 | Septic system plastic distribution box with integrally fastened seal | — | 1997-08-12 |
| 5626346 | Embedded in concrete, elastomeric seal for pipes | — | 1997-05-06 |
| 5618445 | Septic tank solids retainer gas baffle | — | 1997-04-08 |
| 5601291 | Embedded in concrete, elastomeric seal for pipes | — | 1997-02-11 |
| 5592785 | Handle for subterranean concrete covers | — | 1997-01-14 |