Robert Wachter

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Wetzlar, DE

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Patents Grantslast 30 patents

Information Patent Grant
Plate-shaped fire-resistant element in a sandwich construction
- Patent number 6,061,985
- Issue date May 16, 2000
- Wilhelmi Werke AG
- Gerhard Kraus
- E04 - BUILDING
Information Patent Grant
Process for manufacture of an acoustic panel and acoustic panel wit...
- Patent number 6,057,254
- Issue date May 2, 2000
- Wilhelmi Werke AG
- Klaus Bender
- E04 - BUILDING
Information Patent Grant
Sound-absorbing building panel
- Patent number 5,910,082
- Issue date Jun 8, 1999
- Wilhelmi Werke AG
- Klaus Bender
- E04 - BUILDING