Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8252221 | Compacting techniques for forming lightweight concrete building blocks | Franklin David Davies, Rudolf Alfred Heijden, Richard William Kay, Robert H. Nippert | 2012-08-28 |
| 7988123 | Compactable mold for forming building blocks | Franklin David Davies, Rudolf Alfred Heijden, Richard William Kay, Robert H. Nippert | 2011-08-02 |