Patents Assigned to Dan E. Alpert
  • Gemstone
    Patent number: D373971
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: September 24, 1996
    Assignee: Dan E. Alpert
    Inventor: Avi Katz
  • Gemstone
    Patent number: D384593
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: October 7, 1997
    Assignee: Dan E. Alpert
    Inventor: Avi Katz
  • Gemstone
    Patent number: D399165
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: October 6, 1998
    Assignee: Dan E. Alpert
    Inventor: Avi Katz