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发明名称
Time clock controlled automatic mechanism
摘要
申请公布号
US2166683(A)
申请公布日期
1939.07.18
申请号
US19370146705
申请日期
1937.06.07
申请人
GRAYSON JOHN H
发明人
GRAYSON JOHN H.
分类号
G04C23/16
主分类号
G04C23/16
代理机构
代理人
主权项
地址
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