Patents by Inventor Barbara Underdahl

Barbara Underdahl 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).

  • Burglary prevention device
    Publication number: 20050011241
    Abstract: A burglary prevention device is in the form of a T-shaped metal plate having a major portion with a plurality of holes and a minor portion constituting a tang. The device can be installed in any doorway in which a deadbolt is used. It is installed so that the tang of the device is fitted into the latchbolt hole into which the deadbolt fits in the locked position and is positioned immediately in front of the deadbolt.
    Type: Application
    Filed: July 18, 2003
    Publication date: January 20, 2005
    Inventor: Barbara Underdahl