Способ изготовления масок,申请号SU19300071757-传众专利搜索

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发明名称	Способ изготовления масок
摘要
申请公布号	SU20602(A1)	申请公布日期	1931.05.31
申请号	SU19300071757	申请日期	1930.06.13
申请人	PUCHKOV N.N.	发明人	PUCHKOV N.N.
分类号	A41G7/00	主分类号	A41G7/00
代理机构		代理人
主权项
地址

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