Ernst Zimmert

Follow

Person

Hofors, SE

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus to reduce the outer diameter and wall thicknes...
- Patent number 5,125,251
- Issue date Jun 30, 1992
- Mannesmann AG
- Gustav-Adolf Pettersson
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...