| 发明名称 |
TAKPLATE. |
| 摘要 |
A corrugated roofing sheet has special elevations formed in the wave crest of the sheet, the elevations being contoured to increase the sheet's rigidity while permitting the elevations to function as a ladder. The elevations provide effective rigidfying while leaving the valleys of the sheet corrugations free for drainage. |
| 申请公布号 |
NO142536(B) |
申请公布日期 |
1980.05.27 |
| 申请号 |
NO19770002379 |
申请日期 |
1977.07.05 |
| 申请人 |
KORSTRAESK MEKANISKA, G NAESLUND, |
发明人 |
NAESLUND, GUSTAV, |
| 分类号 |
E04D3/24;E04D3/30;(IPC1-7):04D3/30 |
主分类号 |
E04D3/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
