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发明名称
Improvements relating to jig-saw puzzles
摘要
申请公布号
GB453090(A)
申请公布日期
1936.09.04
申请号
GB19360001221
申请日期
1936.01.14
申请人
NORMAN VICTOR WATSON
发明人
分类号
A63F9/10
主分类号
A63F9/10
代理机构
代理人
主权项
地址
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