Patents by Inventor Frode Fron

Frode Fron 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).

  • Plastic foot protector
    Patent number: 4103438
    Abstract: Foot protector for use in safety footwear, shaped of a plastic material that is adapted to the shape of the foot, and being preferably of the polycarbonate type. The protector comprises a toe cap and an instep cap, with a lower part that is shaped so as to be secured to the sole of the footwear, to prevent the foot protector from penetrating into the sole.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: August 1, 1978
    Inventor: Frode Fron
  • Locking device for telescopic displaceable tubes
    Patent number: D268393
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: March 29, 1983
    Inventor: Frode Fron