Change in Employer with approved i140

[l1bhelp]

Hi,

 

Here is my situation appreciate if someone can help.

 

Came to US in L1B- Employer A- Mar 2010

Got H1B - Employer B- Oct 2013

Got I140 Approved- Sep 2015

Got H1B Extension in June 2013- Valid upto 2016

 

Now planning for Change in Employer . Hoping to be employee of C starting Sep 2016.

 

I believe my employer B would revoke my i140 once i leave . In that case i just have H1B valid which was approved based on i140.

 

Can I travel to India without my new employer having my 140 Approved? If i go is there any chance of having H1B Invalidated as i dont have an approved i140?

 

Appreciate your expert opinion.

[Sri123greets]

My I-140 approved . My H1B vaid till next year.  I am changing the employer now. 

 

1. How many years of Visa will i get when i change my Employer.( I have the approved I-140 petition and Alien number)

2. Usually I-140 approved, people used to get 3 years of Visa.

 

Please clarify