John F. Hart

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Holland, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Continuous operating distribution hopper
- Patent number 5,964,184
- Issue date Oct 12, 1999
- Big Dutchman, Inc.
- John F. Hart
- G01 - MEASURING TESTING
Information Patent Grant
Poultry breeder pan feeding system and pan feeder assembly therefor
- Patent number 5,794,562
- Issue date Aug 18, 1998
- Big Dutchman, Inc.
- John F. Hart
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Controlled pan feeder system for poultry
- Patent number 5,406,907
- Issue date Apr 18, 1995
- Big Dutchman Inc.
- John F. Hart
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING