发明授权
- 专利标题: Valve bag
- 专利标题(中): 阀袋
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申请号: US490018申请日: 1983-04-29
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公开(公告)号: US4618993A公开(公告)日: 1986-10-21
- 发明人: Ernst R. Berthelsen
- 申请人: Ernst R. Berthelsen
- 申请人地址: DKX
- 专利权人: Dac-Emballage A.M.B.A.
- 当前专利权人: Dac-Emballage A.M.B.A.
- 当前专利权人地址: DKX
- 主分类号: B31B19/26
- IPC分类号: B31B19/26 ; B65B43/26 ; B65D30/24
摘要:
A valve bag having an upper bottom with a valve and a lower bottom symmetrically folded in a manner where the bottoms lie atop the central bag portion in a side-by-side and parallel manner is provided.
公开/授权文献
- US5028259A Recovery of precious metal 公开/授权日:1991-07-02
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