Patents by Inventor Philip Dretzka

Philip Dretzka 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).

  • Cuff for in-line skates
    Patent number: D365437
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: December 26, 1995
    Assignee: First Team Sports, Inc.
    Inventors: Richard Schaper, Dan M. Sutherland, Erik Mueller, Philip Dretzka
  • Integral in-line skate boot and skate frame
    Patent number: D375829
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: November 26, 1996
    Assignee: First Team Sports, Inc.
    Inventors: Richard Schaper, Dan M. Sutherland, Erik Mueller, Philip Dretzka