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Paul Graham
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Worcester, MA, US
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last 30 patents
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Patent Grant
Bird feeder
Patent number
5,558,040
Issue date
Sep 24, 1996
Droll Yankees, Inc.
Betsy P. Colwell
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Patent Grant
Hummingbird feeder
Patent number
5,454,348
Issue date
Oct 3, 1995
Droll Yankees, Inc.
Betsy P. Colwell
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING