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发明名称
Mine car sealing device
摘要
申请公布号
US2602404(A)
申请公布日期
1952.07.08
申请号
US19470793399
申请日期
1947.12.23
申请人
THE SANFORD INVESTMENT COMPANY
发明人
SANFORD HUGH W.
分类号
B61D7/22
主分类号
B61D7/22
代理机构
代理人
主权项
地址
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