Patents by Inventor Heliodoro S. Zavala

Heliodoro S. Zavala 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: D251874
    Type: Grant
    Filed: June 22, 1977
    Date of Patent: May 15, 1979
    Assignee: Acorform Corporation
    Inventor: Heliodoro S. Zavala