Patents by Inventor Alexander P. Jannssen

Alexander P. Jannssen 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).

  • Visible indexes
    Patent number: 4384912
    Abstract: Visible index strip rolls of a novel, cost effective construction; and methods and machinery for manufacturing those rolls.
    Type: Grant
    Filed: September 29, 1981
    Date of Patent: May 24, 1983
    Inventor: Alexander P. Jannssen