How long it takes to get a receipt number?

aviro

New Member
My employer filed for my H1 Visa transfer on 14th Feb. They have not received the received number yet. but I got my wife's H4 receipt notice ( RD - 15th feb, ND - 21 feb) on 27th feb.
I'm little worried about my case status.I'd appreciate if you could share your experience about transfer timeframe. Generally how long it'll take?
 
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