Angle marking means,申请号US19290337681-传众专利搜索

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发明名称	Angle marking means
摘要
申请公布号	US1917433(A)	申请公布日期	1933.07.11
申请号	US19290337681	申请日期	1929.02.05
申请人	CRESSLER EDWARD P	发明人	CRESSLER EDWARD P.
分类号	G03B42/04	主分类号	G03B42/04
代理机构		代理人
主权项
地址

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