Block keying system,申请号US19360070566-传众专利搜索

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发明名称	Block keying system
摘要
申请公布号	US2107691(A)	申请公布日期	1938.02.08
申请号	US19360070566	申请日期	1936.03.24
申请人	COMALAN, INCORPORATED	发明人	CORSER LAWRENCE E.
分类号	A63H33/10	主分类号	A63H33/10
代理机构		代理人
主权项
地址

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