| Number | Name | Date | Kind |
|---|---|---|---|
| 2632262 | Whittey | Mar 1953 | A |
| 3432946 | Peitl | Mar 1969 | A |
| 4096878 | Adams et al. | Jun 1978 | A |
| 4971092 | Parry et al. | Nov 1990 | A |
| 4999935 | Simi et al. | Mar 1991 | A |
| 5829174 | Hadler et al. | Nov 1998 | A |
| 5987785 | Aguado et al. | Nov 1999 | A |
| 6178669 | Quenzi et al. | Jan 2001 | B1 |
| Entry |
|---|
| Add-A-Fold™ Valves and Enclosures, Force America Inc., 4 pages (2000). |
| Self Contained Integral Valve/Reservoir Assembly, Munchie Power Products, Inc., 3 pages (Date Unknown). |