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经营范围
发明名称
Isolating hanger
摘要
申请公布号
US2051778(A)
申请公布日期
1936.08.18
申请号
US19330658518
申请日期
1933.02.25
申请人
NATIONAL GYPSUM COMPANY
发明人
VENZIE FREDERICK M.
分类号
E04B9/18
主分类号
E04B9/18
代理机构
代理人
主权项
地址
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