How can i get I-797 duplicate copy?

If your employer has an attorney who handled the case, that attorney represents you also whether they like it or not. Ask the attorney for a copy...

My petition has return to USCIS from US consulate for revocation.

There may be several options but we do not have nearly enough information such as the type of visa/petition you are referring to. It would be best...

Additional interview in cd Juarez my visa was denied ... What should i do .. Do i need legal representation?

As long as your husband does not have a DWI on his record you should just work with the consulate to get the interview. You do not need a lawyer...

I am on H1B with visa valid till Jan 28 2017 from previous employer Can I visit India and come back without new stamping...

Yes, you can use a previously issued H-1 visa to reenter with a new H-1 approval notice and proof you work there.

My girlfriend and her son just got tourist Visa's and I want them both with me in the USA she in Juarez I'm in el paso tx

You are discussing visa fraud on a public forum.

I-485 Interview done,but I am worried because i was asked to sign a document at the end .

It seems odd you would ask us about a document you signed but apparently do not know what it was. I would assume it is just authorization to use...

From where should I send my i-130

It goes to Chicago. Have you developed a strategy for when you will come to the US do establish your domicile? You will have to be here at least...

A green card interview

I cannot think of any way that notice from CIS could be any more clear. It clearly says that your father is only required to attend if you are...

If you have advance parole then you should be able to travel anywhere unless you have too much accrued unlawful presence.

Do we get an OPT in second Masters if the OPT in first Masters was denied?

No, your master's level OPT is gone. You will need a PhD to get OPT again.