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经营范围
发明名称
HELICAL DEVICE
摘要
申请公布号
JPH02195294(A)
申请公布日期
1990.08.01
申请号
JP19890014158
申请日期
1989.01.25
申请人
HITACHI LTD
发明人
MOTOJIMA OSAMU;NAKAYAMA HISAHIDE;MURAI KATSUJI
分类号
G21B1/11;G21B1/00;H05H1/12
主分类号
G21B1/11
代理机构
代理人
主权项
地址
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