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经营范围
发明名称
Improvements in or relating to circuits for electromagnetically operated devices foruse in telephone or like systems
摘要
申请公布号
GB494523(A)
申请公布日期
1938.10.26
申请号
GB19370011936
申请日期
1937.04.26
申请人
AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED;WILLIE SAVILLE
发明人
分类号
H01H47/22
主分类号
H01H47/22
代理机构
代理人
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