check this link:
http://www.uscis.gov/files/pressrelease/ReceiptingTimes081007.pdf
USCIS Issues Service Center and Lockbox Receipting Update -as of
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• 回複:USCIS Issues Service Center and Lockbox Receipting Update -as -gc0702- ♂ (75 bytes) () 08/14/2007 postreply 10:45:23