Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D482133 | Front portion of a retaining wall block | Ronald J. Scherer, Michael J. Hogan | 2003-11-11 |
| 6609695 | Mold for producing masonry block with roughened surface | Cecil C. Schmidt, Glenn C. Bolles | 2003-08-26 |