131923 ⎘
Construction or assembling of bulk storage containers employing civil engineering techniques or off the site; Containers for fluent solids, e.g. silos, bunkers; Supports therefor; Constructions, with or without perforated walls, depending on the use of specified materials mainly of concrete, e.g. reinforced concrete or other stone-like materials
Sub-classes:Curb system for a concrete container
#2Methods and systems for concentrated solar power
#3SHUTTERING FOR CONTAINERS
#4SHUTTERING FOR CONTAINERS
#5Bulk material storage facilities with access chases and/or internal filling structures
#6MODULAR CONTAINMENT STRUCTURE
#7Elevated Bulk Storage Structure
#8Manhole ring support for unified concrete pours around grease interceptor