Patents by Inventor Jozef Johannus Maria Warringa

Jozef Johannus Maria Warringa 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).

  • Amplifier device for transmitting tetrode
    Patent number: 4119921
    Abstract: Amplifier device for the UHF-TV band, assembled from cylindrical conductors which are coaxially arranged with respect to one another and connected to a tetrode. The screen grid is grounded and the control grid is provided with dc voltage connecting terminals required for setting the tetrode.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: October 10, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Jozef Johannus Maria Warringa, Harry Piepers