Patents by Inventor Kjell Ake B. Holmgren

Kjell Ake B. Holmgren has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Seal for a box enclosing a compact disc or tape cassette
    Patent number: 4819797
    Abstract: The invention provides a seal for a box (10, 11) enclosing a compact disc, which comprises two rectangular box halves hingedly interconnected. The seal comprises a blocking element (14, 15, 16) to be applied to the box on the outside thereof, and this blocking element engages the two box halves with the box in closed position and is engaged therewith by means of a latch mechanism (18, 19) positively locking into the box halves. The latch mechanism can be operated to an unlocked position by means of a special tool for disengaging the blocking element from the box.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: April 11, 1989
    Assignee: MW Trading APS
    Inventor: Kjell Ake B. Holmgren