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发明名称
Mechanical check list
摘要
申请公布号
US2535408(A)
申请公布日期
1950.12.26
申请号
US19470726481
申请日期
1947.02.05
申请人
GRACE WILLIAM H
发明人
GRACE WILLIAM H.
分类号
G09F7/00
主分类号
G09F7/00
代理机构
代理人
主权项
地址
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