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发明名称
Improvements in or relating to Cutter Picks.
摘要
申请公布号
GB1168617(A)
申请公布日期
1969.10.29
申请号
GB19660012136
申请日期
1966.03.18
申请人
AUSTIN HOY AND COMPANY LIMITED
发明人
SIDNEY ERNEST PROCTOR
分类号
E21C35/18
主分类号
E21C35/18
代理机构
代理人
主权项
地址
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