1
Craig E Brown, Robert J Brown: Fully vented wide rim nursing bottle with canted vent tube. New Vent Designs, Paul M Denk, April 3, 2012: US08146759 (4 worldwide citation)

A nursing bottle formed of a large volume container, incorporating a vent tube that extends to vent pressure at all times. The nursing bottle may have a cylindrical shape or other configuration that prevents formula placed therein from blocking the vent tube regardless of its angular disposition. Th ...


2
Craig E Brown, Robert J Brown: Fully vented wide rim nursing bottle with canted vent tube. Paul M Denk, July 22, 2010: US20100181276-A1

A nursing bottle formed of a large volume container, incorporating a vent tube that extends to vent pressure at all times. The nursing bottle may have a cylindrical shape or other configuration that prevents formula placed therein from blocking the vent tube regardless of its angular disposition. Th ...