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经营范围
发明名称
Improvements in or relating to electric signalling systems
摘要
申请公布号
GB540649(A)
申请公布日期
1941.10.24
申请号
GB19400007313
申请日期
1940.04.23
申请人
STANDARD TELEPHONES AND CABLES LIMITED;LEONARD POWELL LOWRY
发明人
分类号
B64B1/40
主分类号
B64B1/40
代理机构
代理人
主权项
地址
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