Mechanical Instrument Patents (Class D17/24)
  • Music box
    Patent number: D252688
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: August 21, 1979
    Inventor: Chong T. Ahn
  • Music box
    Patent number: D258135
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: February 3, 1981
    Inventor: Chong T. Ahn
  • Music box
    Patent number: D258450
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: March 3, 1981
    Inventor: Chong T. Ahn
  • Music box
    Patent number: D259120
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: May 5, 1981
    Inventor: Chong T. Ahn
  • Music box enclosure for a picture frame or the like
    Patent number: D259612
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: June 23, 1981
    Inventor: Clyde M. Wagner
  • Phonograph or the like
    Patent number: D264462
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: May 18, 1982
    Inventor: John L. Glass
  • Music box
    Patent number: D265836
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: August 17, 1982
    Inventor: Chong T. Ahn
  • Music box
    Patent number: D267885
    Type: Grant
    Filed: August 13, 1981
    Date of Patent: February 8, 1983
    Inventor: Chong T. Ahn