Patents by Inventor Robert J. Michalski

Robert J. Michalski 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).

  • Combined cat playground and exerciser
    Patent number: D257293
    Type: Grant
    Filed: January 23, 1979
    Date of Patent: October 7, 1980
    Assignee: Abeta Pet Supply, Inc.
    Inventor: Robert J. Michalski
  • Combined cat playground and exerciser
    Patent number: D261186
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: October 6, 1981
    Assignee: Abeta Pet Supply, Inc.
    Inventor: Robert J. Michalski