Patents by Inventor Robert Fransiscus Laurentius Maria VAN DER Ven

Robert Fransiscus Laurentius Maria VAN DER Ven 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).

  • Cathode ray tube with electrostatic multipole focusing lens
    Patent number: 3979631
    Abstract: A cathode ray tube wherein conductive supporting members of a focusing electrode, in combination with the conductive coating around the envelope, constitute an electrostatic multipole focusing lens.
    Type: Grant
    Filed: April 10, 1975
    Date of Patent: September 7, 1976
    Assignee: U.S. Philips Corporation
    Inventor: Robert Fransiscus Laurentius Maria VAN DER Ven