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公开(公告)号：US3406155A
公开(公告)日：1968-10-15
申请号：US45682665
申请日：1965-05-18
Applicant: GAF CORP
Inventor： AZORLOSA JULIAN L , WILLIAMS EARL P
CPC classification number: D21H17/455 , C08F20/60 , D21H17/34
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