- 专利标题: Apparatus for precasting concrete stair structures
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申请号: US39555841申请日: 1941-05-28
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公开(公告)号: US2353676A公开(公告)日: 1944-07-18
- 发明人: FRANK KOGL
- 申请人: MINNIE M CLARK , WALTER H CARLSON , ORA E CARLSON , RUBY S MCBRIDE , GENEVIEVE CLARK
- 专利权人: Minnie M Clark,Walter H Carlson,Ora E Carlson,Ruby S Mcbride,Genevieve Clark
- 当前专利权人: Minnie M Clark,Walter H Carlson,Ora E Carlson,Ruby S Mcbride,Genevieve Clark
- 优先权: US39555841 1941-05-28
- 主分类号: B28B7/22
- IPC分类号: B28B7/22
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