Volker Kalkau

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Lichtenstein, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for production of helical springs by spring wi...
- Patent number 9,566,637
- Issue date Feb 14, 2017
- WAFIOS AG
- Volker Kalkau
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR PRODUCTION OF HELICAL SPRINGS BY SPRING WI...
- Publication number 20110239719
- Publication date Oct 6, 2011
- WAFIOS AG
- Volker Kalkau
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD AND APPARATUS FOR PRODUCTION OF HELICAL SPRINGS BY SPRING WI...
- Publication number 20110239718
- Publication date Oct 6, 2011
- WAFIOS AG
- Volker Kalkau
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...