Patents by Inventor Mark A. Opar

Mark A. Opar 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).

  • Patent number: 5480036
    Abstract: A greeting card display apparatus including an upstanding card retaining assembly with concealed slot means for receiving a plurality of endless loop elastic cords in a manner that the elastic cords extend in tension along the periphery of the upstanding assembly to retain greeting cards with respect to the upstanding assembly.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: January 2, 1996
    Inventor: Mark A. Opar