Marlan John Rolfes

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Ottumwa, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Power transmission control for a pull-type implement
- Patent number 4,218,934
- Issue date Aug 26, 1980
- Deere & Company
- Donald W. Demorest
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Tractor-implement control system
- Patent number 3,985,394
- Issue date Oct 12, 1976
- Deere & Company
- Marlan John Rolfes
- B60 - VEHICLES IN GENERAL