where we look of Adress to sale our many German Patent?

Question

Patent: 1- Natural Heat-Engine, this mechanical power to use now
in many way, exemple: production the Eletrical power, without cost. Patent: 2- Welding machine: Glass-steel, glass-Ceranic,Steel-Alluminum, and other.

Answer 1

I am not sure if this is what you are looking for, but here is the address for the US patient office

http://www.uspto.gov/#