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发明名称
Control device
摘要
申请公布号
US1783645(A)
申请公布日期
1930.12.02
申请号
US19270172744
申请日期
1927.03.04
申请人
KELLOGG SWITCHBOARD AND SUPPLY COMPANY
发明人
GROUT MARTIN B.
分类号
H03J1/06
主分类号
H03J1/06
代理机构
代理人
主权项
地址
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