| http://www.w3.org/ns/prov#value | - It is a primary object o'f this invention toprovide a dispensing device or mechanism particularly effective for handling liquids and which serves to accurately dispense .or deliver predetermined quantities of' liquid and which is .o'f .such simple, inexpensive construction that it .m-ay be discarded after limited use,.as for instance, when the contents of a container, to which it is applied or wit
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