| http://www.w3.org/ns/prov#value | - Patent US20080044218 - Piston-type dispenser with one-way valve for storing and dispensing metered ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA dispenser for dispensing a substance, such as a liquid lipstick or other product, has a body defining a variable-volume storage chamber for storing the product.
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