Patents by Inventor Philip R. Karr

Philip R. Karr 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).

  • Fuze modulation system
    Patent number: 4059052
    Abstract: 1.
    Type: Grant
    Filed: February 21, 1957
    Date of Patent: November 22, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Philip R. Karr