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发明名称
Power-operated lock for spring switches
摘要
申请公布号
US1980084(A)
申请公布日期
1934.11.06
申请号
US19300465306
申请日期
1930.07.02
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
PEABODY JAMES A.
分类号
B61L21/06
主分类号
B61L21/06
代理机构
代理人
主权项
地址
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