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发明名称
Track gauge
摘要
申请公布号
US2175655(A)
申请公布日期
1939.10.10
申请号
US19380193378
申请日期
1938.03.01
申请人
BLAIR ALLEN MYRON
发明人
ALLEN MYRON BLAIR
分类号
E01B35/02
主分类号
E01B35/02
代理机构
代理人
主权项
地址
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