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发明名称
Ladder bracket
摘要
申请公布号
US1972211(A)
申请公布日期
1934.09.04
申请号
US19330685718
申请日期
1933.08.18
申请人
WEISGRABER HAROLD O
发明人
WEISGRABER HAROLD O.
分类号
E06C7/16
主分类号
E06C7/16
代理机构
代理人
主权项
地址
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