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发明名称
Clock
摘要
申请公布号
US2343613(A)
申请公布日期
1944.03.07
申请号
US19400328487
申请日期
1940.04.08
申请人
M. M. GOTTLIEB ASSOCIATES, INC.
发明人
JR. EDWIN M. GOLDSMITH,
分类号
G04B19/21
主分类号
G04B19/21
代理机构
代理人
主权项
地址
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