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发明名称
FIELD EMISSION TYPE ELECTRON GUN
摘要
申请公布号
JPH03129651(A)
申请公布日期
1991.06.03
申请号
JP19890267690
申请日期
1989.10.13
申请人
JEOL LTD
发明人
NORIOKA SETSUO
分类号
H01J37/073
主分类号
H01J37/073
代理机构
代理人
主权项
地址
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