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发明名称
Sod ditch check
摘要
申请公布号
US1990855(A)
申请公布日期
1935.02.12
申请号
US19330696702
申请日期
1933.11.04
申请人
CAPPS SIDNEY E
发明人
CAPPS SIDNEY E.
分类号
E02B7/16
主分类号
E02B7/16
代理机构
代理人
主权项
地址
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