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公开(公告)号：CA628792A
公开(公告)日：1961-10-10
申请号：CA628792D
Applicant: B B CHEM CO CANADA
Inventor： PECK SUMNER H , SYLVESTER EDWIN E
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公开(公告)号：CA524457A
公开(公告)日：1956-05-01
申请号：CA524457D
Applicant: B B CHEM CO CANADA
Inventor： PERKINS JOHN L , SYLVESTER EDWIN E
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