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发明名称
Printing telegraph automatic exchange system
摘要
申请公布号
US1987408(A)
申请公布日期
1935.01.08
申请号
US19300485636
申请日期
1930.10.01
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
MCWHIRTER ERIC MALCOLM SWIFT;FLINT JAMES GEORGE;CHAPMAN STANLEY
分类号
H04L12/00
主分类号
H04L12/00
代理机构
代理人
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地址
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