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| Number | Title | Issue Date |
| 4954004 | Coupling device between two elements The invention relates to a releasable coupling between a male element and a female element. The coupling comprises a split clamp ring that is ranged to be received in corresponding annular recesses in the male element and female element, whereby the ring ... | 09/04/1990 |
| 4854764 | Coupling device between two elements The invention relates to a releasable coupling between a male element and a female element. The coupling comprises a split clamp ring that is ranged to be received in corresponding annular recesses in the male element and female element, whereby the ring ... | 08/08/1989 |
