Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6526720 | Masonry block | — | 2003-03-04 |
| 6213754 | Apparatus for manufacturing concrete masonry units | Steven Everett Doty | 2001-04-10 |
| 6030446 | Cementitious compositions and lightweight structural units | Steven Everett Doty | 2000-02-29 |