Inventor
WACHTER ROBERT
DE3 patents
Patents
3 patentsUS6061985AMay 16, 2000
Plate-shaped fire-resistant element in a sandwich construction
WILHELMI WERKE AG54 citations92
US5910082AJun 8, 1999
Sound-absorbing building panel
WILHELMI WERKE AG69 citations92
US6057254AMay 2, 2000
Process for manufacture of an acoustic panel and acoustic panel with sandwich construction
WILHELMI WERKE AG22 citations89