Improved means for conveying liquid, or gaseous or dissolved plant nutriment to the soil
- 专利权人:
- WILLIAM EVERARD DAVIES
- 发明人:
- 申请号：
- GB19190004643
- 公开号：
- GB142953(A)
- 申请日:
- 1919.02.25
- 申请国别(地区):
- 英国
- 年份:
- 1920
- 代理人:
- 摘要：
- 来源网站：
- 中国工程科技知识中心
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- CONTAINER WHICH IS FILLED WITH A LIQUID MEDIUM AND METHOD FOR FEEDING GASEOUS SUBSTANCES INTO THE CONTAINER
