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EP Citations: EP0619881

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Cited inInternational search
Type:Patent literature
Publication No.:US3875045  [XY]
 (BERGRAHM BENGT GORAN FLEMMING, et al);
Type:Patent literature
Publication No.:US4709810  [XY]
 (MAYES DAVID G [US]);
Type:Patent literature
Publication No.:US4759838  [XY]
 (MAYES DAVID G [US], et al);
Type:Patent literature
Publication No.:US5045173  [XY]
 (GUADAGNO PHILIP A [US], et al)