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Thomas Watson, chairman of IBM ; 1943
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| Number | Title | Issue Date |
| 7581263 | Toilet flush water opening device provided with an electrohydraulic actuator A toilet flush opening device (10) includes a water cistern (12) that includes a lower discharge aperture (14) and a vertical moveable discharging open/close element (16) for this aperture (14), which is able to occupy a closed low... | 09/01/2009 |