Patents by Inventor Lloyd J. Rubbelke

Lloyd J. Rubbelke 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).

  • Playground climber
    Patent number: D271228
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: November 1, 1983
    Assignee: E. E. Industries Inc.
    Inventors: Valentine J. Zimmerman, Mary H. Abel, Lloyd J. Rubbelke