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申请人：Snia Viscosa; Viscosa Spa
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申请人：Rhone Poulenc Textile
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申请人：Du Pont
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申请人：Montedison Spa
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申请人：Celanese Corp
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申请人：Teijin Ltd
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申请人：Gulf Research Development Co
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申请人：Bobkowicz E Bobkowicz A J; Lefebvre M M
