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发明名称
Improvements in and relating to means for preventing hammer heads coming off shafts
摘要
申请公布号
GB539173(A)
申请公布日期
1941.08.29
申请号
GB19400010037
申请日期
1940.06.08
申请人
WILLIAM HORACE FEARN
发明人
分类号
B25G3/02
主分类号
B25G3/02
代理机构
代理人
主权项
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