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| All Patents in class 4/305 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,373,449 | Mar. 19, 1968 | E.R. Rusnok | Automatic valve actuated urinal | ||
| 3,524,204 | Aug. 18, 1970 | E.R. Rusnok | Urinal with diverter and a valve actuating device | ||