Patents by Inventor George W. Curtis

George W. Curtis 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).

  • Multi-point door lock system
    Patent number: 5498038
    Abstract: A multi-point door lock system comprising an active lock and an inactive lock for use on single or double doors is self-teaching, provides one hand control of shoot bolts, and provides audible and tactile feedback associated with shoot bolt extension and retraction.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: March 12, 1996
    Assignee: Marvin Lumber and Cedar Co.
    Inventors: Ira J. Simon, George W. Curtis, Andrew B. Campbell