Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5355647 | Installed stress masonry system | Stanley Johnson | 1994-10-18 |
| 4769964 | Self-aligned and leveled, insulated, drystack block | Stanley Johnson | 1988-09-13 |
| 4748782 | Self-aligned and leveled insulated, drystack block structures and means and methods therefor | Stanley Johnson | 1988-06-07 |