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发明名称
Improvements in wrenches
摘要
申请公布号
GB769988(A)
申请公布日期
1957.03.13
申请号
GB19550014993
申请日期
1955.05.24
申请人
J. H. WILLIAMS & CO.
发明人
JOHNSON WALTER JOHN
分类号
B25B13/14
主分类号
B25B13/14
代理机构
代理人
主权项
地址
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