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发明名称
An improved arm lock for a radial drilling machine
摘要
申请公布号
GB509254(A)
申请公布日期
1939.07.11
申请号
GB19380000818
申请日期
1938.01.11
申请人
WILLIAM ASQUITH LIMITED;ALFRED JOHNSON
发明人
分类号
B23Q1/28
主分类号
B23Q1/28
代理机构
代理人
主权项
地址
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