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发明名称
METHOD OF CORROSION-PROOF FOR SEWERAGE FACILITIES
摘要
申请公布号
JPH0462241(A)
申请公布日期
1992.02.27
申请号
JP19900170152
申请日期
1990.06.29
申请人
HAZAMA GUMI LTD
发明人
MAEDA TERUNOBU
分类号
E03F3/00;E03F7/00
主分类号
E03F3/00
代理机构
代理人
主权项
地址
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