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发明名称
EARTH BORING DRILL SLEEVE PROTECTOR
摘要
申请公布号
CA395860(A)
申请公布日期
1941.04.15
申请号
CAD395860
申请日期
申请人
THE LEYLAND AND BIRMINGHAM RUBBER COMPANY
发明人
REGINALD WILLIAM LUNN;HENRY JAMES BUTCHER
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主分类号
代理机构
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