Patents Assigned to Ever Step Development Limited
  • Solar powered light
    Patent number: D437067
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: January 30, 2001
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar compact mobile phone battery charger
    Patent number: D505113
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: May 17, 2005
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar battery charger with adjustable meter and light
    Patent number: D441712
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: May 8, 2001
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar powered light
    Patent number: D444585
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: July 3, 2001
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Combined solar powered lantern and radio
    Patent number: D450143
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: November 6, 2001
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar battery charger
    Patent number: D534861
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: January 9, 2007
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar powered rotating stand
    Patent number: D470688
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: February 25, 2003
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar power panel
    Patent number: D493768
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: August 3, 2004
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Combined radio and torch
    Patent number: D364869
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: December 5, 1995
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Moisture sensor and indicator
    Patent number: D374182
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: October 1, 1996
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Toy windmill
    Patent number: D414223
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: September 21, 1999
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar battery charger with meter
    Patent number: D422964
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: April 18, 2000
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam