| http://www.w3.org/ns/prov#value | - The method of claim 14 wherein said water-repellent film includes a perfluoroalkylalkyl silane selected from compounds having a general formula Rm R'n SiX4-m-n, wherein R is a perfluoroalkyl radical, m is 1, 2 or 3, n is 0, 1, or 2, and m+n is less than 4, R' is selected from the group consisting of vinyl and alkyl radicals, and X is a radical selected from the group consisting of halogen, acyloxy
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