| Number | Name | Date | Kind |
|---|---|---|---|
| D211727 | Cheslock | Jul 1968 | S |
| 4261545 | Allen | Apr 1981 | A |
| 5213305 | Whiteside et al. | May 1993 | A |
| 5415374 | Carroll et al. | May 1995 | A |
| D370057 | Muderlak | May 1996 | S |
| 6019343 | Tsai | Feb 2000 | A |
| 6408873 | Hall et al. | Jun 2002 | B1 |
| Entry |
|---|
| Zurn Industries, Inc., E-Z Flush Unit brochure, Date Unknown, 20 pp. |
| Six photographs of Zurn E-Z Flush Unit. |