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公开(公告)号:CA820960A
公开(公告)日:1969-08-19
申请号:CA820960D
Applicant: DEGUSSA
Inventor: WAGNER HANS , SCHAFER FRITZ
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公开(公告)号:CA682431A
公开(公告)日:1964-03-17
申请号:CA682431D
Applicant: DEGUSSA
Inventor: SCHAFER FRITZ , WIEDORN WERNER , WAGNER HANS , BECK MANFRED
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