| http://www.w3.org/ns/prov#value | - Among the objects of the improvements are the provision of a disk, preferably of absorbent material such as blotting paper and with a nonabsorbent bottom coating, and a holder in which it is removably and replaceably carried composed of a piece of resilient wire formed into a plurality of superposed rings with an extending handle, all of strong, light and efficient form, which may be held in one h
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