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| US3990318 | 20 Mar 1975 | 9 Nov 1976 | General Electric Company | Accumulating control clutch mechanism | | US4121440 | 7 Dic 1973 | 24 Oct 1978 | Edouard Dubied et Cie. (Societe Anonyme) | Fabric draw down device | | US5344061 | 3 Ago 1993 | 6 Sep 1994 | | Ratchet assembly for medical instrument |
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