Patents Examined by Elizabeth Show
  • Selective seed port
    Patent number: 6305321
    Abstract: The invention comprises a feeding port for a bird feeder that serves to discriminate between prospective feeding birds by virtue of a forward leaning facing and a downward sloping shortened perch. The prospective bird must have the ability to cling to the short angled perch while leaning backwards to obtain feed from the seed access opening.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: October 23, 2001
    Inventor: John E Potente