Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7390404 | Apparatus and method for remediation of a drain system | Richard James Heppenstall | 2008-06-24 |
| 7300583 | Apparatus and method for remediation of a waste stream | Richard James Heppenstall | 2007-11-27 |