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发明名称
WATCHMAN'S SIGNAL AND ALARM SYSTEM
摘要
申请公布号
CA401494(A)
申请公布日期
1941.12.16
申请号
CAD401494
申请日期
申请人
DUDLEY LOCK CORPORATION
发明人
HAROLD MACHINIST
分类号
主分类号
代理机构
代理人
主权项
地址
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