| Number | Name | Date | Kind |
|---|---|---|---|
| D223724 | Wallace | May 1972 | S |
| D402907 | Ruff | Dec 1998 | S |
| 6178816 | Katzman et al. | Jan 2001 | B1 |
| Entry |
|---|
| Digital photograph of Hersey water meter bottom plate (date unknown). |
| Digital photograph of ABB Water Meters water meter bottom plate (date unknown). |