How long does it take between I797C and I797A

Sorry I don't have Chinese input.

I received I797C scan copy from HR about 20 days ago. I still haven't heard anything regarding I797A.

How long does it usually take between these two documents

Thanks

一起的，c只是copy而已

if 797c is a courtesy copy, the real one will be sent within 30 days. Pls ask your lawyer to find it.

你看一下自己case approved是哪一天，從那個日期往後數30天，如果還沒有收到I-797a，就要請律師幫你send a case inquiry，問移民局是不是給寄丟了什麽的。大多數人30天内都能收到的。

同问……楼主我和你一样的还没收到797A……

我是6月5号就查到approve，但是之前的797C公司名字被打错，好像律师申请了改名字，所以18号网上显示name corrected。
然后我7月2号拿到了公司收到的797C，至今没有A……