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发明名称
Locking cover
摘要
申请公布号
US1902731(A)
申请公布日期
1933.03.21
申请号
US19300496008
申请日期
1930.11.15
申请人
SHERMAN WARREN S
发明人
SHERMAN WARREN S.
分类号
E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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