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发明名称
Improvements in and relating to grip exerting mechanisms of adjustable spanners, wrenches and the like
摘要
申请公布号
GB633920(A)
申请公布日期
1949.12.30
申请号
GB19470028946
申请日期
1947.10.30
申请人
GODFREY FRANK HUMPHRIS
发明人
分类号
B25B13/16
主分类号
B25B13/16
代理机构
代理人
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