Patents by Inventor Pirjo M. Kaksonen

Pirjo M. Kaksonen 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).

  • Eyeglass frames
    Patent number: 4813775
    Abstract: An opthalmic lens holder is disclosed in which an integral, spring-mounted locking mechanism operates to allow the lens holder to expand for removal of the lens.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: March 21, 1989
    Inventor: Pirjo M. Kaksonen