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Blackboard United States Patent Numbers


8,326,659
7,908,602
7,493,396
7,558,853
8,340,992
8,340,991
8,340,993
8,315,893
8,265,968
8,700,508
8,344,852
8,677,458
8,244,669
8,243,887
7,788,207
8,271,420
8,412,794
8,341,114
6,816,878
7,428,570
8,612,528
8,533,228
7,167,903
Re: 44,535
7,058,662
9,269,324
9,053,500
8,745,222
9,129,254
8,812,719
9,280,759
9,129,090
8,763,070
8,875,047