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发明名称
THERMAL RETARDER UNIT
摘要
申请公布号
CA457397(A)
申请公布日期
1949.06.14
申请号
CAD457397
申请日期
申请人
MCGRAW ELECTRIC COMPANY
发明人
CLARK M. OSTERHELD
分类号
主分类号
代理机构
代理人
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