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发明名称
START-STOP TELEGRAPH SYSTEM
摘要
申请公布号
CA337720(A)
申请公布日期
1933.12.05
申请号
CAD337720
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
EDWARD FISK WATSON
分类号
主分类号
代理机构
代理人
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