| 发明名称 |
Method of keeping water clear of ice |
| 摘要 |
Movable materials, insulating covers, solid insulating boards, reeds and straw, are welded into watertight, frost-resistance film (1), placed on the water (2) at the beginning of the cold season, and are retained in position.
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| 申请公布号 |
DE19750072(A1) |
申请公布日期 |
1999.06.02 |
| 申请号 |
DE19971050072 |
申请日期 |
1997.11.12 |
| 申请人 |
PHILIPPS, FRIEDRICH GOTTLOB, 29582 HANSTEDT, DE |
发明人 |
PHILIPPS, FRIEDRICH GOTTLOB, 29582 HANSTEDT, DE |
| 分类号 |
E02B15/02;(IPC1-7):E02B15/02 |
主分类号 |
E02B15/02 |
| 代理机构 |
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代理人 |
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| 地址 |
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