Patents by Inventor Dale A. Waltz

Dale A. Waltz 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).

  • Method of carpet cleaning and maintenance
    Patent number: 5383972
    Abstract: A carpet cleaning and maintenance method wherein the steps of pre-spraying and extracting a solvent from a carpet and applying and extracting a low sudsing detergent from the carpet are alternated.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: January 24, 1995
    Assignee: Interface Service Management, Inc.
    Inventor: Dale A. Waltz