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发明名称
Time limit relay
摘要
申请公布号
US1901617(A)
申请公布日期
1933.03.14
申请号
US19290404085
申请日期
1929.11.01
申请人
WARD PATRICK C
发明人
WARD PATRICK C.
分类号
H01H50/88
主分类号
H01H50/88
代理机构
代理人
主权项
地址
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