Nesting boxes for birds nesting in hollows, simulating the conditions prevailing in natural hollows, shapes of such boxes, material they are made of, casting moulds and method for mounting them on a tree
- 专利权人:
- PILUS STANISLAW
- 发明人:
- STANISLAW PILUS
- 申请号：
- PL37877406
- 公开号：
- PL213654B1
- 申请日:
- 2006.01.20
- 申请国别(地区):
- PL
- 年份:
- 2013
- 代理人:
- 摘要：
- 来源网站：
- 中国工程科技知识中心
