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法人/股东/高管

发明名称	Doorcheck
摘要
申请公布号	US1861679(A)	申请公布日期	1932.06.07
申请号	US19300482998	申请日期	1930.09.19
申请人	BEITMAN ALBERT B	发明人	BEITMAN ALBERT B.
分类号	E05C17/20	主分类号	E05C17/20
代理机构		代理人
主权项
地址

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