| http://www.w3.org/ns/prov#value | - The electron transport layer is constituted of an electron conducting polymer represented by the formula (I) ##STR1## wherein R1 is a hydrogen atom or an alkyl...http://www.google.com/patents/US5231329?utm_source=gb-gplus-sharePatent US5231329 - Organic thin film electroluminescent deviceAdvanced Patent SearchPublication numberUS5231329 APublication typeGrantApplication numberUS 07/728,646Publicat
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