Betsy P. Colwell

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Foster, RI, US

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Patents Grantslast 30 patents

Information Patent Grant
Rain guard for a bird feeder
- Patent number D452048
- Issue date Dec 11, 2001
- Droll Yankees, Inc.
- Betsy P. Colwell
- D30 - Animal husbandry
Information Patent Grant
Selective bird feeder
- Patent number D440361
- Issue date Apr 10, 2001
- Droll Yankees, Inc.
- Betsy P. Colwell
- D30 - Animal husbandry
Information Patent Grant
Combined hummingbird window feeder and mounting bracket
- Patent number D360710
- Issue date Jul 25, 1995
- Droll Yankees, Inc.
- Betsy P. Colwell
- D30 - Animal husbandry