| Number | Name | Date | Kind |
|---|---|---|---|
| D234768 | Warsinger | Apr 1975 | |
| 3034733 | Brooks et al. | May 1962 | |
| 3086540 | Anderson | Apr 1963 | |
| 3595255 | Mulinex | Jul 1991 | |
| 3702685 | Kirschke | Nov 1972 | |
| 3838815 | Rice | Oct 1974 | |
| 3840033 | Warsinger | Oct 1974 | |
| 4475255 | Tash | Oct 1984 | |
| 4672988 | Tash | Jun 1987 | |
| 4790356 | Tash | Dec 1988 | |
| 4799554 | Clapp et al. | Jan 1989 | |
| 4819314 | Shaddock | Apr 1989 | |
| 4825900 | Tash | May 1989 | |
| 4865062 | Tash | Sep 1989 | |
| 4957123 | McHugh | Sep 1990 |
| Entry |
|---|
| G. T. Water Products, Inc. Product Brochure, 1985, pp. 1-5. |
| Petersen Products Co., Product Brochure, pp. 1-4. |