Patents Assigned to Harmel Automation, Inc.
  • Window screen frame
    Patent number: 5881525
    Abstract: A screen frame formed from a metal sheet in a single unit folds and locks on V-cuts in a tube by a locking mechanism that is configured to engage in crossed directions by the folding.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: March 16, 1999
    Assignee: Harmel Automation, Inc.
    Inventors: Harry M. Riegelman, Melvin J. Stern