Hi Steve
It depends on the service ctern your are deaing with but
usually they send u something(NOA or Casheiers receipt) within a Months
time.
My TimeLine
MY AOS Timeline Cleveland
02/04/2004 mailed I-130,
I-485, I-765 to celveland USCIS
02/05/2004 received return receipt from
post office
02/12/2004 Received Casheirs Receipt(NOT NOA, cleveland
does not send NOA) staing my Cheques amount cashed and also on it my 8
digit A# (i guess its temperory)
Hope this Helps.
Regards
Dhabud