Patents by Inventor Marvin G. Root

Marvin G. Root 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).

  • Window sash lock
    Patent number: D334132
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: March 23, 1993
    Assignee: Truth Div. of SPX Corp.
    Inventors: Greg R. Wobschall, Marvin G. Root
  • Window operator handle design
    Patent number: D350666
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: September 20, 1994
    Assignee: Truth Hardware Corporation
    Inventors: Greg R. Wobschall, Marvin G. Root