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经营范围
发明名称
Improvements in electromagnetic relay arrangements employed in electrical signallingsystems
摘要
申请公布号
GB381946(A)
申请公布日期
1932.10.13
申请号
GB19310020102
申请日期
1931.07.13
申请人
STANDARD TELEPHONES AND CABLES, LIMITED;BENT BUELOW JACOBSEN
发明人
分类号
H03K17/54
主分类号
H03K17/54
代理机构
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