Patents by Inventor Randall Mason

Randall Mason 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).

  • Tool having quick attach system for replacing the working element
    Publication number: 20040247403
    Abstract: A tool having an exceptionally sharp replaceable working element, in which the edges of the working element are protected by elongated rods, and a handle for the tool having parallel slots therein and the rods being wedged in the slots to hold the working element firmly in place during use.
    Type: Application
    Filed: June 4, 2003
    Publication date: December 9, 2004
    Inventors: Richard Grace, Jeff Grace, Randall Mason
  • Device for detecting and signalling the presence of objects in a closed container and a mailbox containing the same
    Patent number: 5377906
    Abstract: A device for detecting and signalling the presence of an object in a closed container, comprising:a housing;one or more sensors each comprising an electronic circuit having a detector and an optical signal trigger, wherein the one or more sensors are coupled to the housing;a power source electrically connected to the one or more sensors; andan optical signal electrically connected to the optical signal trigger,and its use in providing an electronic mailbox which allows an observer to detect the presence of mail from a remote location.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: January 3, 1995
    Inventor: Randall Mason