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公开(公告)号：US3530930A
公开(公告)日：1970-09-29
申请号：US3530930D
申请日：1968-08-22
Applicant: PHILIPS CORP
Inventor： OLDFIELD REGINALD CHARLES
CPC classification number: C23C14/541 , B01J10/02 , B01J19/26 , B01J2219/00768 , C09K5/12
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