| http://www.w3.org/ns/prov#value | - FR-A-1272557, U.S. Pat. No. 1,899,386 and U.S. Pat. No. 2,450,919 describe applicators for a product, generally in powder form, in which the powder is contained in a recess arranged in a foam block and the free end of the recess is covered by a screen in the form of a perforated sheet, a fabric or other porous material.
|
