Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6955499 | Adjustable utility access | — | 2005-10-18 |
| 6799920 | Angle adjustable utility access and method | — | 2004-10-05 |
| 6695526 | Adjustable manhole apparatus | — | 2004-02-24 |
| 6524026 | Adjustable height utility access device | — | 2003-02-25 |
| 6520713 | Height and angle adjustable utility access device and method | — | 2003-02-18 |
| 6457901 | Adjustable manhole apparatus | — | 2002-10-01 |
| 6381775 | Adjustable floor drain apparatus | — | 2002-05-07 |
| 6350373 | Adjustable drain apparatus | — | 2002-02-26 |
| 6269495 | Adjustable floor drain apparatus | — | 2001-08-07 |