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发明名称
METHOD OF FORMING A CEILING COVER STRUCTURE OF SWELLABLE PLASTIC SHEETING
摘要
申请公布号
US3615966(A)
申请公布日期
1971.10.26
申请号
USD3615966
申请日期
1968.10.24
申请人
SVEN OLOF BIRGER LJUNGBO
发明人
SVEN OLOF BIRGER LJUNGBO
分类号
E04B9/04;E04B9/30;(IPC1-7):E04F13/08
主分类号
E04B9/04
代理机构
代理人
主权项
地址
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