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EUROPEAN PATENT APPLICATION EP0348089

  Europaisches Patentamt   European Patent Office   Office europeen des brevets   ® Publication number:   0 348 089   A2 EUROPEAN PATENT APPLICATION   0 Application number: 89305985.7   (§) Date of filing: 13.06.89   ® lnt.Cl«:C01B 3/36 , C10J 3/02   (g> Priority: 20.06.88 US 208929   @ Date of publication of… read more »

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