Class 454/178 - With air pump

Subclass of Class 454 - Ventilation
Definition: Subject matter comprising an air moving apparatus which
No. of patents: 2
Last issue date: 12/09/1986

Number	Title	Issue Date
4627333	Storage structure A method and apparatus for storing a particulate material in a storage assembly. The storage assembly includes a wall for retaining the particulate material and a cover. A cap is positioned above the cover and mounts a vertically movable ring assembly. Du...	12/09/1986
4520714	Aeration duct system An aeration system for grain bins includes a plurality of outlet ducts extending radially outwardly from a central manifold when the grain bin has a flat floor; and a plurality of outlet ducts extending radially upwardly and outwardly from the bottom cent...	06/04/1985

PatentStorm