Paul Brown's Squeeze Bottle Valve
thepatentprofessor.com, Tiny Fox Lab

A man called Paul Brown developed a special valve that released the contents of the bottle when its sides are pressed. His invention was bought by various companies, including Heinz who added it to the new upside-down bottle. Back in 1995 Brown sold his company and his invention brought him $13 million.Tiny Fox Lab Facts

Preview photo credit: thepatentprofessor.com
Source: https://thepatentprofessor.com/this-plucky-inventor-turned-our-world-upside-down/