Patents by Inventor Richard C. Helmsteter

Richard C. Helmsteter 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).

  • Golf club head
    Patent number: D470552
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: February 18, 2003
    Assignee: Callaway Golf Company
    Inventors: Roger Cleveland, Augustin W. Rollinson, Richard C. Helmsteter, Karl A. Clausen, Deedee Lasker