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发明名称
Rotary indicating device
摘要
申请公布号
US2257022(A)
申请公布日期
1941.09.23
申请号
US19390286486
申请日期
1939.07.25
申请人
PHILCO RADIO AND TELEVISION CORPORATION
发明人
PRESSLEY JACKSON H.
分类号
H03J1/04
主分类号
H03J1/04
代理机构
代理人
主权项
地址
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