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发明名称
DUPLEX BRAKE
摘要
申请公布号
CA484649(A)
申请公布日期
1952.07.08
申请号
CAD484649
申请日期
申请人
AMERICAN STEEL FOUNDRIES
发明人
CARL E. TACK
分类号
主分类号
代理机构
代理人
主权项
地址
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