| http://www.w3.org/ns/prov#value | - The purpose of the present invention is to obviate, wholly or in part, the inconveniences of the known forms of embodiment by rationalizing the construction of the cartridge in such a way that, on the one hand, its cost can be considerably lowered and, on the other hand, it is no longer necessary to orientate the retaining cap--which can be simply screwed on.
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