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发明名称
IMPROVEMENTS IN OR RELATING TO DRAUGHT EXCLUDERS
摘要
申请公布号
GB1267733(A)
申请公布日期
1972.03.22
申请号
GB19690021871
申请日期
1969.04.29
申请人
ALLEN RAYMOND MACKEWN
发明人
ALLEN RAYMOND MACKEWN
分类号
E06B7/23
主分类号
E06B7/23
代理机构
代理人
主权项
地址
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