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发明名称
LEAKAGE PREVENTING METHOD OF CONNECTION JOINT PART OF BURIED BRANCH PIPE
摘要
申请公布号
JPS56109983(A)
申请公布日期
1981.08.31
申请号
JP19800013321
申请日期
1980.02.05
申请人
NIPPON KANKEN KOGYO KK
发明人
ABE KAORU
分类号
F16L55/12;F16L55/10;F16L55/16
主分类号
F16L55/12
代理机构
代理人
主权项
地址
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