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发明名称
RAILWAY CAR HATCH PLUG
摘要
申请公布号
CA400698(A)
申请公布日期
1941.11.11
申请号
CAD400698
申请日期
申请人
STANDARD RAILWAY EQUIPMENT MANUFACTURING CO. (CANADA)
发明人
CHARLES DAVID BONSALL
分类号
主分类号
代理机构
代理人
主权项
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