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经营范围
发明名称
Traffic buffer
摘要
申请公布号
US2000974(A)
申请公布日期
1935.05.14
申请号
US19340727567
申请日期
1934.05.25
申请人
MEAD ANDREW W
发明人
MEAD ANDREW W.
分类号
E01F15/14
主分类号
E01F15/14
代理机构
代理人
主权项
地址
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