Eckehard Hanert

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Bollingen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for winding and forming of cooling coils
- Patent number 4,139,932
- Issue date Feb 20, 1979
- Benteler-Werke AG
- Eckehard Hanert
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of and an apparatus for manufacturing elongated curved tubul...
- Patent number 4,135,380
- Issue date Jan 23, 1979
- Benteler-Werke AG
- Egon Olszewski
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...