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发明名称
Improvements in draught excluders
摘要
申请公布号
GB993232(A)
申请公布日期
1965.05.26
申请号
GB19640008832
申请日期
1964.03.03
申请人
HARRY HARPER
发明人
分类号
E06B7/20
主分类号
E06B7/20
代理机构
代理人
主权项
地址
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