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经营范围
发明名称
Improvements in drawing instruments
摘要
申请公布号
GB563318(A)
申请公布日期
1944.08.09
申请号
GB19430004871
申请日期
1943.03.25
申请人
JOHN PESKETT SIMPSON;JOHN STEWART;METROPOLITAN-VICKERS ELECTRICAL COMPANY LIMITED
发明人
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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