Donald J. Hellwig

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Exeter, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Stabilizer for leaf spring suspension device
- Patent number 6,158,723
- Issue date Dec 12, 2000
- Hellwig Products Company, Inc.
- Donald J. Hellwig
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Stabilizer for leaf spring suspension
- Patent number 5,992,831
- Issue date Nov 30, 1999
- Hellwig Products Company, Inc.
- Donald J. Hellwig
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Multipurpose splint means for spring leaf assemblies
- Patent number 4,345,749
- Issue date Aug 24, 1982
- Hellwig Products Company, Inc.
- Donald J. Hellwig
- B60 - VEHICLES IN GENERAL