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经营范围
发明名称
Suspended ceiling structure
摘要
申请公布号
US2787813(A)
申请公布日期
1957.04.09
申请号
US19550548638
申请日期
1955.11.23
申请人
JOSEPH SYLVAN
发明人
SYLVAN JOSEPH
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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