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经营范围
发明名称
ELECTRON BEAM WELDING
摘要
申请公布号
JPS52155150(A)
申请公布日期
1977.12.23
申请号
JP19760071158
申请日期
1976.06.18
申请人
HITACHI LTD
发明人
OKAMURA HISANOBU;SHIDA TOMOHIKO
分类号
B23K15/00
主分类号
B23K15/00
代理机构
代理人
主权项
地址
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