Bird feeder
US5062390A · kind A · utility
53Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Nov 23, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K39/0206
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Feeder for birds, especially hummingbirds, that has a stem rising from the center of a bowl and that has a cover for the bowl through which the stem passes, which cover is selectively locked to the stem for loosening on occasion to permit filling of the bowl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.