Alvin T. Classen

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Norfolk, NE, US

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Patents Grantslast 30 patents

Information Patent Grant
Seeder with outrigger marker
- Patent number 6,220,364
- Issue date Apr 24, 2001
- Alvin T Classen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Lawn aerator with rocker arm tine synchronizing means
- Patent number 4,819,734
- Issue date Apr 11, 1989
- Alvin T. Classen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Self-propelled lawn aeration machine
- Patent number 4,662,456
- Issue date May 5, 1987
- Alvin T. Classen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Self-propelled lawn aeration machine
- Patent number 4,606,411
- Issue date Aug 19, 1986
- Alvin T. Classen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Tine support and drive mechanism for a compact self-propelled lawn...
- Patent number 4,606,412
- Issue date Aug 19, 1986
- Alvin T. Classen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING