Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832907 | Controlled moulding equipment | Erik Spangenberg | 2004-12-21 |
| 6817857 | Main frame for a concrete block molding apparatus | Erik Spangenberg | 2004-11-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832907 | Controlled moulding equipment | Erik Spangenberg | 2004-12-21 |
| 6817857 | Main frame for a concrete block molding apparatus | Erik Spangenberg | 2004-11-16 |