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摘要
申请公布号
US2279164(A)
申请公布日期
1942.04.07
申请号
US19400372229
申请日期
1940.12.30
申请人
GETTLEMAN SAMUEL R
发明人
GETTLEMAN SAMUEL R.
分类号
G09F23/10
主分类号
G09F23/10
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