| http://www.w3.org/ns/prov#value | - Patent US3864062 - System for storing a flowable mass - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA system for the storage of a flowable mass, such as a liquid or a pulverulent solid, includes two storage units each with a closed vessel provided with a pair of three-way valves which are controlled by respective actuating levers.
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