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发明名称
Flangeway guard
摘要
申请公布号
US1996574(A)
申请公布日期
1935.04.02
申请号
US19330668051
申请日期
1933.04.26
申请人
FRAZIER JAMES W
发明人
FRAZIER JAMES W.
分类号
E01C9/04
主分类号
E01C9/04
代理机构
代理人
主权项
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