Wolfgang Helmich

Follow

Person

Waldkraiburg, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of propellant charge powder
- Patent number 4,963,296
- Issue date Oct 16, 1990
- WNC-Nitrochemie GmbH
- Gunther Niedermeier
- C06 - EXPLOSIVES MATCHES