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经营范围
发明名称
MEANS FOR GENERATING A NEGATIVE CHARGE
摘要
申请公布号
US4109290(A)
申请公布日期
1978.08.22
申请号
US19770788118
申请日期
1977.04.18
申请人
APSEE, INCORPORATED
发明人
GALLAGHER, JAMES C.
分类号
H01T23/00;(IPC1-7):H01J3/04
主分类号
H01T23/00
代理机构
代理人
主权项
地址
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