Expanding device for tubular envelopes,申请号US19370142655-传众专利搜索

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发明名称	Expanding device for tubular envelopes
摘要
申请公布号	US2168993(A)	申请公布日期	1939.08.08
申请号	US19370142655	申请日期	1937.05.14
申请人	ALEX JOSEPH	发明人	JOSEPH ALEX
分类号	B29B13/02;B29C35/04;B29C35/06;B29C35/16;B29C55/24;B29C61/08;B29C63/42;B43K19/16	主分类号	B29B13/02
代理机构		代理人
主权项
地址

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