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摘要
申请公布号
US2727683(A)
申请公布日期
1955.12.20
申请号
US19460640464
申请日期
1946.01.11
申请人
ALLEN PHILIP H;CHROMY BENJAMIN J
发明人
ALLEN PHILIP H.;CHROMY BENJAMIN J.
分类号
G06F7/498;G06F7/50;G09G3/04;H03K17/969;H03K21/02;H03K23/78;H03K23/82
主分类号
G06F7/498
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