Method and apparatus for forming windows in blanks for envelopes and other articles,申请号US19370178494-传众专利搜索

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发明名称	Method and apparatus for forming windows in blanks for envelopes and other articles
摘要
申请公布号	US2257829(A)	申请公布日期	1941.10.07
申请号	US19370178494	申请日期	1937.12.07
申请人	ALFRED WINKLER;MAX DUNNEBIER	发明人	WINKLER ALFRED;DUNNEBIER MAX
分类号	B31B19/00	主分类号	B31B19/00
代理机构		代理人
主权项
地址

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