Werner Kiefer

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Mainz-Mombach, DE

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Patents Grantslast 30 patents

Information Patent Grant
Fireproof building element
- Patent number 4,203,264
- Issue date May 20, 1980
- JENAer Glaswerk, Schott
- Werner Kiefer
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS