Patents by Inventor George Edouard Walrafen

George Edouard Walrafen 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: 4012147
    Abstract: The use of an optical fiber for providing a point source of radiation at the entrance of a spectrometer obviates the necessity for an entrance slit at the input end of the device. Improved optical imaging at decreased expense is achieved.
    Type: Grant
    Filed: November 6, 1974
    Date of Patent: March 15, 1977
    Inventor: George Edouard Walrafen