John M. Kapphahn

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Elbow Lake, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Vacuum planter exhaust filtration system
- Patent number 9,451,741
- Issue date Sep 27, 2016
- John M. Kapphahn
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Vacuum planter exhaust filtration system
- Patent number 9,072,217
- Issue date Jul 7, 2015
- John M. Kapphahn
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Foldable artificial mulch cover having slit installation feature wi...
- Patent number 5,528,855
- Issue date Jun 25, 1996
- John M. Kapphahn
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Sickle guard aligning tool
- Patent number 4,541,267
- Issue date Sep 17, 1985
- John M. Kapphahn
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Vacuum Planter Exhaust Filtration System
- Publication number 20150257333
- Publication date Sep 17, 2015
- John M. Kapphahn
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Application
Vacuum Planter Exhaust Filtration System
- Publication number 20140238284
- Publication date Aug 28, 2014
- John M. Kapphahn
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING