Patents by Inventor Walter P. Christoph

Walter P. Christoph 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).

  • Electrolytic signal detector with an orifice cathode
    Patent number: 4197522
    Abstract: 1.
    Type: Grant
    Filed: August 20, 1954
    Date of Patent: April 8, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Walter P. Christoph