Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5314266 | Method of recycling construction and demolition debris | R. Paul Smith | 1994-05-24 |
| 5288171 | Method of recycling construction and demolition debris | R. Paul Smith | 1994-02-22 |
| 5181803 | Method of making daily cover for a landfill | R. Paul Smith | 1993-01-26 |