Lothar Frenz

Follow

Person

Mainz, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Fire-retardant glazing
- Patent number 5,205,099
- Issue date Apr 27, 1993
- Schott Glaswerke
- Holger Grunhage
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS