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发明名称
摘要
申请公布号
JPH034997(U)
申请公布日期
1991.01.18
申请号
JP19890065189U
申请日期
1989.06.02
申请人
发明人
分类号
F16L59/04;(IPC1-7):F16L59/04
主分类号
F16L59/04
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代理人
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地址
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