Patents by Inventor Leif H. Chapman

Leif H. Chapman 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).

  • Air spoiler
    Patent number: D271191
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: November 1, 1983
    Assignee: General Motors Corporation
    Inventors: Ralph J. Amprim, Leif H. Chapman, Richard Ruzzin
  • Vehicle wheel cover
    Patent number: D272897
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: March 6, 1984
    Assignee: General Motors Corporation
    Inventor: Leif H. Chapman
  • Wheel cover
    Patent number: D273781
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: May 8, 1984
    Assignee: General Motors Corporation
    Inventor: Leif H. Chapman
  • Wheel cover
    Patent number: D294342
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: February 23, 1988
    Assignee: General Motors Corporation
    Inventor: Leif H. Chapman
  • Wheel cover
    Patent number: D301866
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: June 27, 1989
    Assignee: General Motors Corporation
    Inventors: Leif H. Chapman, Richard F. Ruzzin
  • Wheel
    Patent number: D302004
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: July 4, 1989
    Assignee: General Motors Corporation
    Inventors: Leif H. Chapman, Richard F. Ruzzin
  • Combined rear spoiler and light
    Patent number: D304819
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: November 28, 1989
    Assignee: General Motors Corporation
    Inventors: Leif H. Chapman, Richard F. Ruzzin