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发明名称
MINERAL WOOL
摘要
申请公布号
CA371921(A)
申请公布日期
1938.02.15
申请号
CAD371921
申请日期
申请人
CHICAGO DISTRICT ELECTRIC GENERATING CORPORATION
发明人
CHARLES F. RAMSEYER
分类号
主分类号
代理机构
代理人
主权项
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