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发明名称
Illuminating device for telephones
摘要
申请公布号
US2217242(A)
申请公布日期
1940.10.08
申请号
US19380200453
申请日期
1938.04.06
申请人
THE DIALITE COMPANY
发明人
SWALLEY WILLIAM C.;LICHTINGER ARTHUR J.
分类号
H04M1/22
主分类号
H04M1/22
代理机构
代理人
主权项
地址
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