Improvements in or relating to spinning tops,申请号GB19490021738-传众专利搜索

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发明名称	Improvements in or relating to spinning tops
摘要
申请公布号	GB666803(A)	申请公布日期	1952.02.20
申请号	GB19490021738	申请日期	1949.08.22
申请人	EDWARD ERNEST MASON	发明人
分类号	A63H1/22	主分类号	A63H1/22
代理机构		代理人
主权项
地址

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