Dec 25, 2014 · Visa Stamping Question in Chennai with Dropbox Option. ... (2nd Extension valid till May 2017) 2. Same classification of Visa (H1b) 3. Visa expired within 12 months ... I am on H1b and my visa stamping has expired an year back but I do have valid H1b approval form on which I am working now. I am planning to visit Issue with H1b renewal in Chennai US embassy - Immigration Voice H1B Visa Renewal Stamping Dropbox Experience – Chennai, India 2014 One of our readers, Sathish has shared his detailed H1B Visa Dropbox Renewal experience with us. I believe, this is the first experience for Dropbox submission. It is written very clearly and gives you a clear picture of the exact process. Getting your H1B visa stamped is crucial to you being in the U.S. legally, so you’re going to want to know all of the H1B stamping documents. Check out this complete guide for h1b visa stamping documents checklist 2018 and 2019 and H1B stamping India information. H1B Visa Renewal – Extension H1B visa status can be granted initially for up to three years, and then can be extended for another three years. The normal maximum amount of time a foreign national can remain in the U.S. in H1B visa status is six years.