Patents by Inventor Bertil Vallien

Bertil Vallien 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).

  • Centrifugal separator
    Patent number: D335294
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: May 4, 1993
    Assignee: Alfa-Laval Separation AB
    Inventor: Bertil Vallien