| http://www.w3.org/ns/prov#value | - A polymer film substrate is irradiated with ??-rays, electron beams or other radiations to perform multi-graft polymerization...http://www.google.com/patents/US7803846?utm_source=gb-gplus-sharePatent US7803846 - Highly durable polymer electrolytic membrane for a fuel cell having a cross-linked structureAdvanced Patent SearchPublication numberUS7803846 B2Publication typeGrantApplication numberUS 11
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