Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6851235 | Building block with a cement-based attachment layer | — | 2005-02-08 |
| 6397549 | Building block with a wooden attachment layer | — | 2002-06-04 |
| 6085480 | Building block having a wooden attachment layer | — | 2000-07-11 |
| 5913791 | Building block, method for making the same, and method for building a wall using the same | — | 1999-06-22 |