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发明名称
Ceiling construction
摘要
申请公布号
US2268822(A)
申请公布日期
1942.01.06
申请号
US19390284719
申请日期
1939.07.15
申请人
UNITED STATES GYPSUM COMPANY
发明人
HEEREN ARTHUR A.
分类号
E04B9/24
主分类号
E04B9/24
代理机构
代理人
主权项
地址
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