Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209037 | Building block insert | Francis A. Kennedy, John P. Neff | 1993-05-11 |
| 5066440 | Process for making an insulated building block | Francis A. Kennedy, John P. Neff | 1991-11-19 |
| 4986049 | Insulated building block | Francis A. Kennedy, John P. Neff | 1991-01-22 |