Patents Assigned to Hefner Plastics, Inc.
  • Hummingbird feeder
    Patent number: 4691665
    Abstract: A hummingbird feeder device suspended usually by a wire or string dispenses nectar to hummingbirds. An ant barrier is created by completely encircling the support used for suspension with a wall forming a moat containing an edible cooking oil or some other substance known to bar the passage of ants.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: September 8, 1987
    Assignee: Hefner Plastics, Inc.
    Inventor: Boby R. Hefner