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发明名称
Improvements connected with driving chain-wheels of pedal driven cycles
摘要
申请公布号
GB615026(A)
申请公布日期
1948.12.31
申请号
GB19460024373
申请日期
1946.08.16
申请人
SIDNEY WILLIAM NOBBS
发明人
分类号
B62M9/00
主分类号
B62M9/00
代理机构
代理人
主权项
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