Patents Assigned to David Hersh & Associates
  • Patent number: D259100
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: May 5, 1981
    Assignee: David Hersh & Associates
    Inventor: Marvin A. Markowitz
  • Patent number: D260083
    Type: Grant
    Filed: October 19, 1978
    Date of Patent: August 4, 1981
    Assignee: David Hersh & Associates
    Inventor: Robert E. Strickland