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经营范围
发明名称
Improvements in or relating to telephone systems
摘要
申请公布号
GB324952(A)
申请公布日期
1930.02.06
申请号
GB19280032433
申请日期
1928.11.06
申请人
AUTOMATIC TELEPHONE MANUFACTURING COMPANY, LIMITED;WILLIAM HENRY PAULETT;CHARLES GILLINGS
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
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地址
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