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发明名称
Improvements relating to automatic telephone and like selective systems
摘要
申请公布号
GB385384(A)
申请公布日期
1932.12.29
申请号
GB19310029116
申请日期
1931.10.20
申请人
SIEMENS BROTHERS & CO., LIMITED;WILLIAM GEORGE PATTERSON;DOUGLAS PERCY LONG
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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