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经营范围
发明名称
FLAG-TYPE PIG-SIG
摘要
申请公布号
GB8419735(D0)
申请公布日期
1984.09.05
申请号
GB19840019735
申请日期
1984.08.02
申请人
WILLIAMSON INC, T D
发明人
分类号
F16L55/48
主分类号
F16L55/48
代理机构
代理人
主权项
地址
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