Patents Assigned to Royal Sovereign Corporation
  • Ceiling fan
    Patent number: D328638
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: August 11, 1992
    Assignee: Royal Sovereign Corporation
    Inventor: Joseph Hsieh
  • Combined ceiling fan and light
    Patent number: D328639
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: August 11, 1992
    Assignee: Royal Sovereign Corporation
    Inventor: Joseph Hsieh