Patents by Inventor David Wai Wah Ng

David Wai Wah Ng 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).

  • Rotary driving tool
    Patent number: D502854
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: March 15, 2005
    Assignee: Winsource Industries Limited
    Inventor: David Wai Wah Ng
  • Electric drill
    Patent number: D508190
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: August 9, 2005
    Assignee: Winsource Industries Limited
    Inventor: David Wai Wah Ng
  • Electric drill
    Patent number: D515381
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: February 21, 2006
    Assignee: Winsource Industries Limited
    Inventor: David Wai Wah Ng
  • Electric jigsaw
    Patent number: D519805
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: May 2, 2006
    Assignee: Winsource Industries Limited
    Inventor: David Wai Wah Ng
  • Electric saw
    Patent number: D524619
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: July 11, 2006
    Assignee: Winsource Industries Limited
    Inventor: David Wai Wah Ng
  • Electric circular saw
    Patent number: D527599
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: September 5, 2006
    Assignee: Winsource Industries Limited
    Inventor: David Wai Wah Ng
  • Cordless reciprocating saw
    Patent number: D471417
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: March 11, 2003
    Assignee: One World Technologies Limited
    Inventors: Daniel Alex Chunn, David Wai Wah Ng
  • Cordless reciprocating saw
    Patent number: D471418
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: March 11, 2003
    Assignee: One World Technologies Limited
    Inventors: Daniel Alex Chunn, David Wai Wah Ng
  • Radio charger
    Patent number: D476621
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: July 1, 2003
    Assignee: One World Technologies Limited
    Inventors: Daniel Alex Chunn, David Wai Wah Ng, Charles Keith Long
  • Cordless drill
    Patent number: D477974
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: August 5, 2003
    Assignee: One World Technologies Limited
    Inventors: Daniel Alex Chunn, David Wai Wah Ng
  • Pivot flashlight
    Patent number: D479352
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: September 2, 2003
    Assignee: One World Technologies Limited
    Inventor: David Wai Wah Ng
  • Charging cradle
    Patent number: D481675
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: November 4, 2003
    Assignee: One World Technologies Limited
    Inventor: David Wai Wah Ng
  • Stick drill
    Patent number: D487383
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: March 9, 2004
    Assignee: One World Technologies Limited
    Inventor: David Wai Wah Ng