John C. Stelk

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Betendorf, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Metal shredder hammer
- Patent number D426556
- Issue date Jun 13, 2000
- Sivyer Steel Corporation
- Maurice R. Bradley
- D15 - Machines not elsewhere specified
Information Patent Grant
Replaceable end member for a hammermill spider
- Patent number 5,169,077
- Issue date Dec 8, 1992
- Sivyer Steel Corporation
- John C. Stelk
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information Patent Grant
Symmetrical protective cap for a rotary hammer assembly for a hamme...
- Patent number 5,072,888
- Issue date Dec 17, 1991
- Sivyer Steel Corporation
- John C. Stelk
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information Patent Grant
Heavy duty spider assembly for a hammermill
- Patent number 5,022,593
- Issue date Jun 11, 1991
- Sivyer Steel Corporation
- John C. Stelk
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information Patent Grant
Replaceable end cap assembly for the spider arm of a hammermill
- Patent number 4,915,310
- Issue date Apr 10, 1990
- Sivyer Steel Corporation
- John C. Stelk
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...