How do you go about finding the financial bank of a defendant after the plaintiff won a case in court.

According to Article 52 of the New York Civil Practice Law and Rules you may serve an information subpoena and restraining notice on any bank where you have a reasonable basis to believe the debtor may have assets.  There are software programs and search engines which lawyers subscribe to which narrow the search from shooting an arrow into the ocean to actually shooting at a target which some predictability, but no guarantees.  If you are still looking for help in collecting on a judgment, check out my website, www.nathansonlaw.com, and let me know if I may be able to help.