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发明名称
Improved safety device for coupling hook
摘要
申请公布号
GB373389(A)
申请公布日期
1932.05.26
申请号
GB19310013840
申请日期
1930.05.11
申请人
WALTER BRADFORD
发明人
分类号
F16B45/02
主分类号
F16B45/02
代理机构
代理人
主权项
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