发明授权
US1918462A Apparatus for impregnating coarsely fibrous materials to be worked up into building elements
失效
用于浸渍要被加工成建筑构件的粗纤维材料的装置
- 专利标题: Apparatus for impregnating coarsely fibrous materials to be worked up into building elements
- 专利标题(中): 用于浸渍要被加工成建筑构件的粗纤维材料的装置
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申请号: US58046731申请日: 1931-12-11
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公开(公告)号: US1918462A公开(公告)日: 1933-07-18
- 发明人: KONRAD ERDMANN
- 申请人: KONRAD ERDMANN
- 专利权人: Erdmann Konrad
- 当前专利权人: Erdmann Konrad
- 优先权: US58046731 1931-12-11; US48893830 1930-10-15
- 主分类号: D21J1/00
- IPC分类号: D21J1/00
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