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Bird Feeder
专利权人:
Robert E. Miller
发明人:
Robert E. Miller,Tristan Christianson
申请号:
US13468456
公开号:
US20120285386A1
申请日:
2012.05.10
申请国别(地区):
US
年份:
2012
代理人:
摘要:
A bird feeder comprising of a free spinning plate guards to prevent unwanted pests such as squirrels from accessing the seed within the feeder. Whereas birds can feed while resting on perches which protrude outwardly from the bottom portion of the feeder, non-flying pest animals such as squirrels must approach the feeder along its outer periphery, traversing the plate guards in the process. As the pest tries to climb onto the feeder and access the seed, the plate guards spin preventing the pest from having a stable footing and thus fall off the feeder.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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