Patents Assigned to Almqvist & Wiksell Forlag AB
  • Mounting device or book for storing, displaying and handling transparent pictures
    Patent number: 3965595
    Abstract: A mounting or book for storing, displaying and handling transparencies having at least two sheet sets, each set containing at least one sheet which is pivotally mounted in the book in a manner so that any single sheet can be separately displayed or superimposed upon a single sheet of a further set. At least one carrier frame has a set of sheets hinged to it at one or both edges so that any sheet from a set can be pivoted toward the center of the carrier.
    Type: Grant
    Filed: December 16, 1974
    Date of Patent: June 29, 1976
    Assignee: Almqvist & Wiksell Forlag AB
    Inventor: Erik Kjellqvist