Patents by Inventor Britt I. Dahlgren

Britt I. Dahlgren 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).

  • Connecting device
    Patent number: 4242829
    Abstract: A device for providing a waterproof connection between two separate sections of a water canal in a toy kit. In that connection a connecting element with transversal sealing strips is used said element principally having a U-shaped section.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: January 6, 1981
    Inventors: Anders P. Arnstrom, Lennart K. Dahlgren, Britt I. Dahlgren
  • Toy water canal sections
    Patent number: D266937
    Type: Grant
    Filed: November 18, 1980
    Date of Patent: November 16, 1982
    Inventor: Britt I. Dahlgren