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公开(公告)号：US2670363A
公开(公告)日：1954-02-23
申请号：US27289452
申请日：1952-02-21
Applicant: NAT LEAD CO
Inventor： WADINGTON JOHN P
CPC classification number: C07F7/006 , C01G23/002 , C01P2006/60
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公开(公告)号：US2691594A
公开(公告)日：1954-10-12
申请号：US27289352
申请日：1952-02-21
Applicant: NAT LEAD CO
Inventor： WADINGTON JOHN P
CPC classification number: D06M11/47 , D06M11/20 , D06M11/22 , Y10T428/31649
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