U.S. Patent No. 9,180,378: Conditional access to areas in a video game
U.S. Patent no. 9,180,378: Conditional access to areas in a video game Issued November 10, 2015, to Activision Publishing, Inc. Priority Date May 17, 2011 Summary: U.S. Patent No. 9,180,378 (the ‘378…
9180378
activision
Conditional access to areas in a video game
patent
