Patents by Inventor Andre Albertin

Andre Albertin 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 tubes electron-guns
    Patent number: 4009410
    Abstract: An electron-gun for cathode-ray tubes comprising, by comparison with prior art guns, at least one supplementary electrode (6) of the diaphragm type, arranged between the accelerator grid (3) and the anode (4) of such gun, and placed at a positive potential lower than that of said anode, forming with the entry of said anode a second condenser lens influencing the electron-beam (F) to produce a second cross-over (C.sub.2) and utilisable in particular for multicolor cathode-ray tubes.
    Type: Grant
    Filed: September 20, 1973
    Date of Patent: February 22, 1977
    Assignee: Thomson-CSF
    Inventors: Claude Pommier, Andre Albertin