发明授权
- 专利标题： Concrete forms for building a concrete spillway
- 专利标题（中）： 用于建造混凝土溢洪道的混凝土形式
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申请号： US609671申请日： 1975-09-02
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公开(公告)号： US4060217A公开(公告)日： 1977-11-29
- 发明人: Donald Kirk
- 申请人： Donald Kirk
- 专利权人： Donald Kirk
- 当前专利权人： Donald Kirk
- 主分类号： B28B7/00
- IPC分类号： B28B7/00 ; B28B7/22 ; F04C1/00
摘要：
Concrete forms for building a concrete spillway using prefabricated metal concrete forms. The concrete forms being adaptable for building spillways having various widths, heights and lengths. The spillways are used to control water runoff during heavy rains and prevent soil erosion of farm and ranch land.
公开/授权文献
- US5085744A Electroplated gold-copper-zinc alloys 公开/授权日：1992-02-04
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