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发明名称
Electric clock
摘要
申请公布号
US2022715(A)
申请公布日期
1935.12.03
申请号
US19340724905
申请日期
1934.05.10
申请人
GRAYSON APPLIANCE CO., LTD.
发明人
GREENAMYER GEORGE
分类号
G04C15/00
主分类号
G04C15/00
代理机构
代理人
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地址
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