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经营范围
发明名称
METHOD FOR MEASURING AIR LEAKAGE OF VACUUM VESSEL
摘要
申请公布号
JPH09101229(A)
申请公布日期
1997.04.15
申请号
JP19950261223
申请日期
1995.10.09
申请人
HITACHI LTD
发明人
KIKUCHI MASAAKI
分类号
G01N7/00;G01M3/04;G01M3/34;(IPC1-7):G01M3/04
主分类号
G01N7/00
代理机构
代理人
主权项
地址
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