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发明名称
Lock
摘要
申请公布号
US1860369(A)
申请公布日期
1932.05.31
申请号
US19290362907
申请日期
1929.05.14
申请人
NATIONAL MALLEABLE & STEEL CASTINGS COMPANY
发明人
SHAFER JAMES A.
分类号
B61D7/16
主分类号
B61D7/16
代理机构
代理人
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地址
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