Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6056137 | Retrofit underground storage tank and method for making the same | Edward B. Cannan, Jr., Michael Blackmar, Edgar Clifford Crosby, III, John C. King, Stephen C. Macy | 2000-05-02 |
| 5816424 | Retrofit underground storage tank | Edward B. Cannan, Jr., Michael Blackmar, Edgar Clifford Crosby, III, John C. King, Stephen C. Macy +1 more | 1998-10-06 |
| 4635943 | Indoor and outdoor game | — | 1987-01-13 |