Patents by Inventor Stephen Joseph Hulshizer

Stephen Joseph Hulshizer 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).

  • Electrical timer-switch
    Patent number: 4001527
    Abstract: An electrical timer-switch has a clock motor which closes and opens a switch, the two contact points of the switch being wired to external contacts which can be plugged into a wall switch receptacle to establish a shunt around the latter switch.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: January 4, 1977
    Inventor: Stephen Joseph Hulshizer