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发明名称
MECHANICAL PIPE AND FITTING JOINT CLEANING DEVICE
摘要
申请公布号
GB9113318(D0)
申请公布日期
1991.08.07
申请号
GB19910013318
申请日期
1991.06.20
申请人
KOLLER, DAVID H
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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