Patents by Inventor Knut Nossum

Knut Nossum 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).

  • Key controlled pick resistant lock
    Patent number: 4007615
    Abstract: A push key type lock mechanism which requires insertion and removal of the key for operating of the associated bolt. The lock mechanism includes an anti-picking device which requires complete key insertion for operation of the lock mechanism to prevent trial and error picking of the lock.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: February 15, 1977
    Inventor: Knut Nossum