With the silent shuttering of the Revere Ware brand last year, all traces of Revere Ware have been removed from the website of Corelle, the parent company that owns the Revere Ware brand. You can still try contacting them for warranty issues, but we aren’t hopeful. We’ve heard from some customers that have been told by Corelle that they no longer provide warranty support of any kind for Revere Ware products.
If you do contact them, you might point out that the Revere Ware warranty is still posted on their website (which can be found only through Google as far as we can tell). Perhaps that will convince them to give you something for your troubles.