Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5449245 | Paving block with improved water run-through | — | 1995-09-12 |
| 5311720 | Method and apparatus for attaching parts of buildings or other articles to a support structure | — | 1994-05-17 |
| 5277514 | Block for paving and like uses | — | 1994-01-11 |
| 4936712 | Retaining wall system | — | 1990-06-26 |
| 4711599 | Paving block | — | 1987-12-08 |
| 4290645 | Stacking chair | Geoffrey A. Hollington | 1981-09-22 |