Patents by Inventor Carl E. Hagberg

Carl E. Hagberg 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).

  • Body having through holes and a method for manufacturing said body
    Patent number: 4348830
    Abstract: This invention discloses improvements to the connecting blocks for a kit for assembling toy-like configurations from blocks and solid sticks.The blocks are made in at least two pieces which have contacting surfaces. The one of the contacting surfaces is substantially smooth and the other has grooves therein. When assembled the grooves and adjacent surfaces of the two pieces form holes for the sticks to be inserted into.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: September 14, 1982
    Assignee: Intermatch S.A.
    Inventor: Carl E. Hagberg
  • Recreational kit for constructing objects
    Patent number: 4326354
    Abstract: This invention discloses a kit for assembling light, airy, toy-like designs from blocks and solid sticks made of the same material throughout. The blocks preferably have tapered holes adapted to receive the sticks' ends therein. The holes and the sticks are adapted to compressively engage with one another upon insertion of selected ends of the sticks in the holes, thereby providing a secure grip by each hole's wall upon the end of the associated stick, locking it into the hole.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: April 27, 1982
    Inventor: Carl E. Hagberg