Nitrogen-containing heterocyclic derivative and organic electroluminescent element using same
Nitrogen-containing heterocyclic derivative and organic electroluminescent element using same
- CN 101,503,393 B
- Filed: 01/27/2004
- Issued: 08/19/2015
- Est. Priority Date: 03/13/2003
- Status: Expired due to Term
- EN CH
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- Pin
