David P. Hoppman

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Fond du Lac, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Roll-up crowd gate
- Patent number 5,799,615
- Issue date Sep 1, 1998
- A. F. Klinzing Company, Inc.
- David P. Hoppman
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Walk-though flat barn parlor
- Patent number 5,392,731
- Issue date Feb 28, 1995
- A. F. Klinzing Co., Inc.
- David P. Hoppman
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING