Searching for us pat 4362328 entry guard
Unfortunately, this handle set is no longer made. I think the only thing we carry that may work is our 82-005. This is a surface mount handle, meaning it has its own self contained mortise lock that does not need to interact with any mechanism inside the door. That allows it to work on just about anything, space provided. You will also likely have to drill new holes. Other than that, I think it would be a good solution.
If the door is stuck in the locked position with no way to unlock it, then you have a very difficult project ahead of you. The door will likely need to be cut open so that you can remove it. I would suggest contacting a local professional to do this for you, since it can be labor intensive and not at all simple to do.