FRAME STRUCTURE FOR AGRICULTURAL VENTILATION FAN WITH SHUTTER PLATE
- 专利权人:
- 发明人:
- 申请号：
- JP19950022773
- 公开号：
- JP3146337(B2)
- 申请日:
- 1995.02.10
- 申请国别(地区):
- 日本
- 年份:
- 2001
- 代理人:
- 摘要：
- 来源网站：
- 中国工程科技知识中心
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