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发明名称
SCREW PROTECTOR AND ITS BLANK
摘要
申请公布号
JPH0314974(A)
申请公布日期
1991.01.23
申请号
JP19890167660
申请日期
1989.06.28
申请人
NIPPON DORIRU TEC:KK
发明人
IIO KAZUO
分类号
F16K5/00;F16L55/00
主分类号
F16K5/00
代理机构
代理人
主权项
地址
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