Volker Hellwig

Follow

Person

Krefeld, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Composition or concentrate for conserving wood and wood materials
- Patent number 4,750,934
- Issue date Jun 14, 1988
- Desowag-Bayer Holzschutz GmbH
- Wolfgang Metzner
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...