Patents Assigned to Fa. Pass & Co.
  • Sound-absorbing panel
    Patent number: 4143495
    Abstract: A sound-absorbing panel having a front and a rear sheet, the front sheet being corrugated and perforated; a filler of particles of elastic material lies between the sheets.
    Type: Grant
    Filed: September 26, 1977
    Date of Patent: March 13, 1979
    Assignee: Fa. Pass & Co.
    Inventor: Ulrich Hintz