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发明名称
Improvements in draughting machines
摘要
申请公布号
GB726473(A)
申请公布日期
1955.03.16
申请号
GB19530015093
申请日期
1953.05.29
申请人
THE NORTH THAMES GAS BOARD
发明人
HOLLIS HAROLD FRANCIS
分类号
B43L13/14
主分类号
B43L13/14
代理机构
代理人
主权项
地址
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