| 发明名称 |
ELECTRIC DEVICE TO DRILL HOLES IN PLASTIC COVERS USED ON AGRICULTURE |
| 摘要 |
<p>The device provides a rapid and efficient means of making openings in plastics sheet used to cover seeds or plants to obtain better germination or protection from frost. It consists of a tube with a switch at one end and a resistance at the other end. There is also a plug for connection to an energy source which feeds the resistance.</p> |
| 申请公布号 |
PT80070(A) |
申请公布日期 |
1985.04.01 |
| 申请号 |
PT19850080070 |
申请日期 |
1985.03.06 |
| 申请人 |
JULIO ANTONIO SALGADO DA COSTA |
发明人 |
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| 分类号 |
B29C65/22;(IPC1-7):B29C65/22 |
主分类号 |
B29C65/22 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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