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经营范围
发明名称
Improvements in or relating to duplicate-writing appliances
摘要
申请公布号
GB729760(A)
申请公布日期
1955.05.11
申请号
GB19520015586
申请日期
1952.06.20
申请人
SHAW & SONS LIMITED;GEOFFREY RUSSELL ARMSTRONG;DENIS ASHTON BULLOCK
发明人
分类号
B41L3/02
主分类号
B41L3/02
代理机构
代理人
主权项
地址
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