최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0835175 (1986-03-03) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 15 인용 특허 : 1 |
A bird feeder having a feed reservoir provided with a feed access opening, a perch, a roof for covering the reservoir, a roof extension hingedly mounted on the roof and biased to normally extend in a coplanar relationship therewith, so as to overlie the access opening and an auxiliary perch fixed to
A bird feeder comprising in combination: a feed reservoir provided with at least one feed access opening; a perch arranged adjacent said access opening; a roof for covering said reservoir; and a weight responsive unit for preventing access to feed available at said access opening by animals and bird
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