Used mainly in Adobe Photoshop as the default format for saving data, a file with the .PSD file extension is called an Adobe Photoshop Document file. Though some PSD files contain just one single image and nothing else, the common use for a PSD file includes much more than just storing an image file.
For each H1B visa application, the USCIS assigns a unique 13 digit alphanumeric number. There are 4 USCIS service centers to handle H1B applications. The first 3 character of your receipt signifies the particular service center, where the application is being processed.They can be any one of WAC, EAC, SRC, and LIN.ollowing are the USCIS service center telephone numbers to find out your H1B visa status. Call the appropriate number and keep your receipt number ready in order to use this service.
The H1B visa duration is limited to 6 years. If required to come again on H1B visa, then one has to stay outside USA, for at least one year, before re-entering.You may be eligible for extension beyond 6 yrs if your green card process and your labor is pending for more then 365 days or you have applied for 485/AOS.