| 发明名称 |
Concrete method and equipment |
| 摘要 |
Method and equipment for producing a convex riser in concrete flat work. The apparatus includes a frame and shaper which are utilized to produce risers of controlled uniformity.
|
| 申请公布号 |
US4199541(A) |
申请公布日期 |
1980.04.22 |
| 申请号 |
US19780894496 |
申请日期 |
1978.04.07 |
| 申请人 |
MCFARLAND, GEORGE E |
发明人 |
MCFARLAND, GEORGE E |
| 分类号 |
E01C19/18;E01C19/50;E01C23/00;E01F9/047;(IPC1-7):E01C11/00 |
主分类号 |
E01C19/18 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
