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公开(公告)号:CA867396A
公开(公告)日:1971-03-30
申请号:CA867396D
Applicant: CA NAT RESEARCH COUNCIL
Inventor: INGOLD KEITH U , MEADUS FREDERICK W
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公开(公告)号:CA826714A
公开(公告)日:1969-11-04
申请号:CA826714D
Applicant: CA NAT RESEARCH COUNCIL
Inventor: PUDDINGTON IRA E , MEADUS FREDERICK W , FARNAND JOSEPH R
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