Patents by Inventor Wai Chung David Lee

Wai Chung David Lee 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).

  • Suction nozzle for vacuum cleaner
    Patent number: D453247
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: January 29, 2002
    Assignee: U.S. Philips Corporation
    Inventor: Wai Chung David Lee
  • Vacuum cleaner
    Patent number: D455875
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: April 16, 2002
    Assignee: U.S. Philips Corporation
    Inventor: Wai Chung David Lee
  • Vacuum cleaner
    Patent number: D456101
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: April 23, 2002
    Assignee: U.S. Philips Corporation
    Inventor: Wai Chung David Lee
  • Electric iron
    Patent number: D478401
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: August 12, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Wai Chung David Lee
  • Blister pack
    Patent number: D480300
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: October 7, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Wai Chung David Lee