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发明名称
Combined track gauge control device and train stopping device
摘要
申请公布号
US1817380(A)
申请公布日期
1931.08.04
申请号
US19270228868
申请日期
1927.10.26
申请人
HEINRICH KARL
发明人
KARL HEINRICH
分类号
B61K9/08
主分类号
B61K9/08
代理机构
代理人
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地址
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