Soil heating and irrigation system
- 专利权人:
- FELLER, FRITZ
- 发明人:
- FRITZ FELLER
- 申请号:
- CH19750009917
- 公开号:
- CH603029(A5)
- 申请日:
- 1975.07.30
- 申请国别(地区):
- 瑞士
- 年份:
- 1978
- 代理人:
- 摘要:
- Soil heating and irrigation system uses heat exchangers in the form of plastic strips forming ducts for water
- 来源网站:
- 中国工程科技知识中心