Progressive Equipment Companies

Hi,

I am new to Inventors corner. I am a independent table game inventor. I have a table game that should be starting field trial soon. I am also a table games dealer. I was wondering if anyone could give names of progressive equipment companies. Ones that might work with a independent table game inventor. It is not something I want to do in the near future. If my game was to get some placements, then I might be interested. Does anyone know the costs of getting a company to do this for you. Also do you need additional patent for the progressive?

Thank You