Inventor
SIPPONEN JUHA-PEKKA
FI3 patents
Patents
3 patentsUS7421411B2Sep 2, 2008
Digital rights management in a mobile communications environment
NOKIA CORP196 citations95
US7415439B2Aug 19, 2008
Digital rights management in a mobile communications environment
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US7333946B1Feb 19, 2008
Ticketing with printing option
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