Yardage measuring device for football games,申请号US19380202954-传众专利搜索

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发明名称	Yardage measuring device for football games
摘要
申请公布号	US2139300(A)	申请公布日期	1938.12.06
申请号	US19380202954	申请日期	1938.04.19
申请人	CASSELL LEONARD E;MASSIE DAVID B	发明人	CASSELL LEONARD E.;MASSIE DAVID B.
分类号	G01B5/00	主分类号	G01B5/00
代理机构		代理人
主权项
地址

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