Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6129482 | Reversible interlocking field drain panel | — | 2000-10-10 |
| 5773756 | Lightweight and durable utility pull box for protecting splices and junctions of underground coaxial cables, electrical wires and optical fibers | — | 1998-06-30 |
| 5419838 | Groundwater storage and distribution system having a gallery with a filtering means | — | 1995-05-30 |
| 5087151 | Drainage system | — | 1992-02-11 |