Where did beno guttenberge find his discovery?

Beno Guttenberg is not a widely recognized figure associated with a specific discovery, so it seems there may be a misunderstanding or confusion regarding the name. If you meant Johannes Gutenberg, he is known for inventing the movable type printing press in the 15th century in Mainz, Germany. This invention revolutionized the production of books and the spread of knowledge. If you meant someone else, please provide more context for clarification.