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发明名称
摘要
申请公布号
DE2049895(A1)
申请公布日期
1972.04.13
申请号
DE19702049895
申请日期
1970.10.10
申请人
发明人
分类号
F28F9/26
主分类号
F28F9/26
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代理人
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地址
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