.~ Of moving material between zones having different pressures and inhibiting change in pressure gradient therebetween
DEFINITION
Classification: 414/805
Of moving material between zones having different pressures and inhibiting change in pressure gradient therebetween:
(under subclass 800) Process of moving or enabling gravitational movement of material from a region having a particular pressure to a region having another pressure and preventing or significantly retarding any change in the pressure differential between the regions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
217+, for apparatus for moving a material between zones
having different pressures and inhibiting change in pressure gradient therebetween.
