Patents by Inventor Leigh Jason McGrath

Leigh Jason McGrath 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).

  • DOOR LOCKING/UNLOCKING UNIT
    Publication number: 20090027194
    Abstract: A door locking/unlocking apparatus includes a housing, a locking mechanism, at least one control device for controlling the locking mechanism and at least one sensory device, so that the door locking/unlocking apparatus enables a door controlled by the apparatus to be automatically unlocked upon the detection or presence of smoke or fire.
    Type: Application
    Filed: February 26, 2007
    Publication date: January 29, 2009
    Inventor: Leigh Jason McGrath