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| US4103358 | 3 Sep 1975 | 25 Jul 1978 | Picker Corporation | Fluid mixing and dispensing system |
| US4271983 | 8 May 1978 | 9 Jun 1981 | Toppan Printing Co., Ltd. | Liquid-withdrawing device |
| US4697622 | 13 Jun 1986 | 6 Oct 1987 | Parker Hannifin Corporation | Passive filling device |
| USRE30610 | 9 Feb 1979 | 12 May 1981 | Picker Corporation | Fluid mixing and dispensing system |