Patents by Inventor Ralph M. Bergo

Ralph M. Bergo 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).

  • Microfilm reader
    Patent number: D244934
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: July 5, 1977
    Assignee: Stromberg Datagraphix, Inc.
    Inventors: Stephen G. Hauser, Keith S. Keith, Ralph M. Bergo, Robert T. DiSorbo
  • Blood processing machine
    Patent number: D258909
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: April 14, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Ralph M. Bergo, Stephen G. Hauser, Sheldon Keith