mine took exactly 6 months mine was just approved this week and i sent mine early september
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Application sent 11/06/12 Biometrics appt 12/06/12 Approved 2/15/13 EAD received 2/23/13 SSN received 3/02/13
Sent renewal 11/04/14 Biometrics done 12/09/14 (NSC)
Approved: 2/26/2015