| Number | Name | Date | Kind |
|---|---|---|---|
| 3616103 | Greiner et al. | Oct 1971 | A |
| 5735643 | Castonguay et al. | Apr 1998 | A |
| D406358 | Risi et al. | Mar 1999 | S |
| 6024517 | Castonguay et al. | Feb 2000 | A |
| 6115983 | Poignard | Sep 2000 | A |
| D466619 | Britton | Dec 2002 | S |
| Entry |
|---|
| Pisa II modular interlocking units, Sweet's General Building & Renovation, vo. 3, 1993.* |
| Bomanite, slate, Sweet's General Building & Renovation, vo. 3, buyline 5050, 1993.* |
| Patterned Concrete, Sweet's General Building & Renovation, vo. 3, buyline 3927, 1993.* |
| The Scott System, Inc., Form Liners for Concrete, Rocky Mountian Flagstone, Sweet's General Building & Renovation, vo. 3, buyline 5050, 1993. |