| http://www.w3.org/ns/prov#value | - A charging unit 4 for storing and recharging vacuum cleaner 1 is shown in oblique external view in FIG. 2, in which reference numeral 5 denotes a pocket, i.e. recessed portion formed in the charging unit 4, which is shaped in accordance with the shape of the lower end of vacuum cleaner 1 such as to removably retain vacuum cleaner 1 therein.
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