Can i Transfer my H1b on recipt basis

My H1B is picked in lottary and approved too.But my employer is not providing me I-797.So wanted to know can i transfer my visa to another employer on recipt bases.Please help.

Technically you can as USCIS can easily pull-up all information from the receipt number. The tricky part is to convince new employer/attorney to file it using just the receipt number and print out of online status showing it as approved.