Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7240791 | Method of packaging and selling natural stone | Lawrence E. Coffman | 2007-07-10 |
| 6594973 | Method of packaging and selling natural stone | Lawrence E. Coffman | 2003-07-22 |