Patents by Inventor Dorothy B. Martin

Dorothy B. Martin 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: 4802575
    Abstract: A coupon organizing system having a carrying case sized to receive a coupon filing assembly, a plurality of shopping tools and a sorter. The filing assembly includes a plurality of pages having first indicia means and a plurality of substantially overlapping and staggered pockets formed therein. Each pocket is defined by a pair of walls of unequal heights and has a lip formed adjacent the top of one wall and second indicia means mounted thereto. A method for sorting and retrieval of coupons according to product type and expiration date is provided.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: February 7, 1989
    Inventor: Dorothy B. Martin