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经营范围
发明名称
WATER SEALING APPARATUS OF SPHERICAL VALVE
摘要
申请公布号
JPS55142173(A)
申请公布日期
1980.11.06
申请号
JP19790050363
申请日期
1979.04.25
申请人
HITACHI LTD
发明人
TERAMOTO TETSUYA;WATANABE YASUSUKE;ITOU TAKASHI;KAWAI JIYUICHIROU;ISHIGAMORI ISAO
分类号
F16K5/20
主分类号
F16K5/20
代理机构
代理人
主权项
地址
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