H1B Transfer with 3 companies

[tech2012]

 Hi

How many employers can do H1B Visa transfer process parallely (Same time) ?
I have been selected by 3 projects -(Client) and all the 3 employers (Vendors) are willing to transfer my H1 B visa.
If they all put H1B Transfer cases to USCIS on same time (Normal Process) . So
Is there any problem of my H1 status ?
Shall I choose among them ?
How USCIS know about whom I worked for ?

Please suggest on this.
Appreciate

[nashviller]

Im in a similar boat. My H1B is in tranfer to Company B from Company A. Company B filed my H1B transfer on May 24th and it is still under "Initial review". Company A revoked my H1B on July 24th. Now Im planning to move to company C even though I dont have a valid I797. 

 

I did speak to few companies that said it is a regular process. So far from the internet searches and the murthy forums what I got so far was that I can transfer my H1 to any number of companies as long as I have pay checks within last 60 days.