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摘要
申请公布号
US2096302(A)
申请公布日期
1937.10.19
申请号
US19360080624
申请日期
1936.05.19
申请人
KLEMA JOSEPH N
发明人
KLEMA JOSEPH N.
分类号
G09F11/23
主分类号
G09F11/23
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