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发明名称
Resilient railway track construction
摘要
申请公布号
US2024114(A)
申请公布日期
1935.12.10
申请号
US19310577420
申请日期
1931.11.27
申请人
UNITED STATES GYPSUM COMPANY
发明人
ROSS IRA G.;MCNEIL WILLIAM M.
分类号
E01B9/62
主分类号
E01B9/62
代理机构
代理人
主权项
地址
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