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发明名称
Improvements in or relating to bells
摘要
申请公布号
GB385451(A)
申请公布日期
1932.12.29
申请号
GB19320001716
申请日期
1932.01.20
申请人
KARL GEORG KLINTDAHL
发明人
分类号
G08B3/02;G10K1/074
主分类号
G08B3/02
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