发明授权
US2332544A Process and machine for the manufacture of envelopes of paper or similar material
失效
用于制造纸张或类似材料的信封的工艺和机器
- 专利标题: Process and machine for the manufacture of envelopes of paper or similar material
- 专利标题(中): 用于制造纸张或类似材料的信封的工艺和机器
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申请号: US34240840申请日: 1940-06-26
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公开(公告)号: US2332544A公开(公告)日: 1943-10-26
- 发明人: ALFRED WINKLER , MAX DUNNEBIER , KARL GELPKE
- 申请人: ALFRED WINKLER , MAX DUNNEBIER , KARL GELPKE
- 专利权人: Winkler Alfred,Dunnebier Max,Gelpke Karl
- 当前专利权人: Winkler Alfred,Dunnebier Max,Gelpke Karl
- 优先权: DE2332544X 1938-09-17
- 主分类号: B31B23/00
- IPC分类号: B31B23/00 ; B65D27/30