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发明名称
Improvements in or relating to electric switches and to the application of switches to electrically-heated kettles, toasters and the like
摘要
申请公布号
GB346980(A)
申请公布日期
1931.04.23
申请号
GB19300010689
申请日期
1930.04.04
申请人
JOHN ASHWORTH CRABTREE
发明人
分类号
H05B1/02
主分类号
H05B1/02
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代理人
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