Patents by Inventor Charles Gwathmey

Charles Gwathmey 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: D274681
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: July 17, 1984
    Assignee: Knoll International, Inc.
    Inventors: Charles Gwathmey, Robert Siegel
  • Patent number: D276674
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: December 11, 1984
    Assignee: Knoll International, Inc.
    Inventors: Charles Gwathmey, Robert Siegel
  • Patent number: D278577
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: April 30, 1985
    Assignee: Knoll International, Inc.
    Inventors: Charles Gwathmey, Robert Siegel