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发明名称
Improvements in cycle and like bells
摘要
申请公布号
GB646731(A)
申请公布日期
1950.11.29
申请号
GB19470033238
申请日期
1947.12.17
申请人
RICHARD WILLIAM SPURRELL
发明人
分类号
G10K1/072
主分类号
G10K1/072
代理机构
代理人
主权项
地址
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