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经营范围
发明名称
POLISHING METHOD FOR UNDERGROUND PIPE
摘要
申请公布号
JPH02118300(A)
申请公布日期
1990.05.02
申请号
JP19880268782
申请日期
1988.10.25
申请人
OSAKA GAS CO LTD
发明人
NAKAO TAKASHI;HAMANO SATOTAROU;NISHINO MASUSHI
分类号
F16L55/16;F16L55/18
主分类号
F16L55/16
代理机构
代理人
主权项
地址
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