Patents by Inventor James C. Duguid

James C. Duguid 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: D314163
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: January 29, 1991
    Assignee: Navistar International Transportation Corp.
    Inventors: Charles W. Harris, L. David Allendorph, Ronald L. Rhoades, Norman J. Wilson, James C. Duguid
  • Patent number: D328273
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: July 28, 1992
    Assignee: Navistar International Transportation Corp.
    Inventors: Charles B. McGrew, Jr., Frantz Mueller, Larry N. Reynard, James C. Duguid
  • Patent number: D370887
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: June 18, 1996
    Assignee: Navistar International Transportation Corp.
    Inventor: James C. Duguid
  • Patent number: D378585
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: March 25, 1997
    Assignee: Navistar International Transportation Corp.
    Inventors: James C. Duguid, Allen J. Fisher