Patents by Inventor Janos Barsai

Janos Barsai 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).

  • Patent number: 3994563
    Abstract: A reflecting stereoscope has picture holders and oculars for the observation of pictures held by the picture holders, and an optical train between the picture holders and the oculars. Picture marks and measuring markers carrying adjustable measuring marks are interposed in the optical train and there is a measuring device for measuring the location of the measuring marks. The picture holders are disposed in the focal plane of the oculars and a lens system on the optical axis of the oculars projects the magnified image of the measuring marks onto the focal plane of the oculars. Partially reflecting mirrors in the light path of the optical train observe picture marks and the measuring marks. A special system for moving the measuring markers and measuring their position is provided.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: November 30, 1976
    Assignee: Magyar Optikai Muvek
    Inventors: Janos Barsai, Sandor Ditroi, Tibor Illes, Laszlo Vegh, Sandor Dekany, deceased, Sandor Fazekas, deceased