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发明名称
Subtraction key latch
摘要
申请公布号
US1859897(A)
申请公布日期
1932.05.24
申请号
US19290332460
申请日期
1929.01.14
申请人
SUNDSTRAND CORPORATION
发明人
SUNDSTRAND OSCAR J.
分类号
G06C21/04
主分类号
G06C21/04
代理机构
代理人
主权项
地址
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