For applications filed before June 8, 1995, and for patents that were still in force on June 8, 1995, the patent term is either 17 years from the issue date or 20 years from the filing date of the earliest U.S. or international application.

That's all a patentee gets.

Edit: Ron is correct that there are some extremely limited circumstances where a patent term can be extended. But that is not the case for the patents at issue here.