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发明名称
RAILWAY CAR DRAFT GEAR
摘要
申请公布号
CA397577(A)
申请公布日期
1941.07.01
申请号
CAD397577
申请日期
申请人
AMERICAN STEEL FOUNDRIES
发明人
ROBERT B. COTTRELL;FREDERICK C. KULIEKE
分类号
主分类号
代理机构
代理人
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