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发明名称
Rail graph producing device
摘要
申请公布号
US2067387(A)
申请公布日期
1937.01.12
申请号
US19330666762
申请日期
1933.04.18
申请人
THE RAIL JOINT COMPANY
发明人
GADD WILLIAM EYRE;LANSING HORACE L.
分类号
E01B35/00
主分类号
E01B35/00
代理机构
代理人
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地址
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