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发明名称
Amplitude regulator
摘要
申请公布号
US2847574(A)
申请公布日期
1958.08.12
申请号
US19560616178
申请日期
1956.10.16
申请人
BECKMAN INSTRUMENTS, INC.
发明人
DONNER WALTER
分类号
H01J49/00
主分类号
H01J49/00
代理机构
代理人
主权项
地址
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