| Number | Name | Date | Kind |
|---|---|---|---|
| D275858 | Wilden | Oct 1984 | |
| D331412 | Wilden | Dec 1992 | |
| D370488 | Kozumpik, Jr. et al. | Jun 1996 | |
| D380218 | McKee et al. | Jun 1997 |
| Entry |
|---|
| Brochure entitled "Quadraseal", promoted by Sonoco Capseals (2 pages). |
| Catalog entitled "SandPIPER Spill Containment Group--Sealless Diaphragm Pumps", distributed by Warren Rupp (1995). |