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发明名称
Telephone system
摘要
申请公布号
US2077861(A)
申请公布日期
1937.04.20
申请号
US19340722012
申请日期
1934.04.23
申请人
ASSOCIATED TELEPHONE AND TELEGRAPH COMPANY
发明人
TAYLOR REGINALD;BAKER GEORGE THOMAS
分类号
C08L7/00;H04Q3/00
主分类号
C08L7/00
代理机构
代理人
主权项
地址
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