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发明名称
AIR BRAKE SYSTEM
摘要
申请公布号
CA386801(A)
申请公布日期
1940.02.13
申请号
CAD386801
申请日期
申请人
JOHN HAM
发明人
JOHN HAM
分类号
主分类号
代理机构
代理人
主权项
地址
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