| 发明名称 |
Modified artificial surface and method and apparatus of making the same |
| 摘要 |
An artificial surface having at least one compartment with a filler therein has the filler held in position by a vacuum.
|
| 申请公布号 |
US5618131(A) |
申请公布日期 |
1997.04.08 |
| 申请号 |
US19950486911 |
申请日期 |
1995.06.07 |
| 申请人 |
WEBER, EDWARD A. |
发明人 |
WEBER, EDWARD A. |
| 分类号 |
E01C13/02;E01C13/08;(IPC1-7):E01C5/18 |
主分类号 |
E01C13/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
