1
Richard F M Smith, Robert G Irvine: Demand oxygen controller and respiratory monitor. Walter F Wessendorf Jr, April 25, 1989: US04823788 (132 worldwide citation)

An improved method and apparatus for controlling the flow of any breathing gas such as oxygen through a cannula or "mask" to a person (patient, aviator, baby, miner, or diver) can be limited to the portion of the breathing cycle when the person breathes inward. This has the effect of reducing the co ...


2
Harold L Hull, Robert Renn, Robert G Irvine, William G Donovan: Multi-positionable, flexible tailgate. December 21, 1993: US05271656 (9 worldwide citation)

A tailgate barrier for a pickup truck bed which can be removably located at multiple positions within the truck bed and may be locked by a cotter-key or a padlock for security as the mounting means are brackets suitably mounted in proximity to both sidewalls of the bed. The barrier is made in the fo ...