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Tiered verification

US Patent 8308557 · Granted Nov 13, 2012

Estimated economic value: $4,790,000 ⓘ

Assignee

Igt

Inventors

Andy O. Bryson (12 patents)
Zackery E. Derich (1 patents)
Ahern P. Knox (1 patents)
Crystian Terry (1 patents)
Jamie Tsao (1 patents)

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