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发明名称
CAVITY WALL ELEMENT
摘要
申请公布号
GB1262630(A)
申请公布日期
1972.02.02
申请号
GB19710032385
申请日期
1969.01.22
申请人
ACCESSAIR S.A.
发明人
NIKOLAUS LAING
分类号
F16L59/02;F16L59/06
主分类号
F16L59/02
代理机构
代理人
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