Patents by Inventor Tore Hultberg

Tore Hultberg 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).

  • Glow-lamp holder
    Patent number: 4222623
    Abstract: This invention relates to a holder for a glow-lamp or a bulb and comprises internally in said holder a switch mechanism which on its side facing the bulb has contacts for providing electric contact with the contact surfaces of the lamp base, and which has terminals for the conductors connected to the holder, the electric connection between the terminals and the contacts being interruptable when removing the bulb from the holder.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: September 16, 1980
    Inventor: Tore Hultberg