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发明名称
THERMAL TREATMENT OF BITUMINOUS MATERIALS
摘要
申请公布号
CA872654(A)
申请公布日期
1971.06.08
申请号
CAD872654
申请日期
申请人
HELMUT BECKER TRADING AS WESTHYDRAULIK BECKER KG
发明人
FRITZ BECKER
分类号
主分类号
代理机构
代理人
主权项
地址
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