A patent print poster for a Cold Air Pressure Apparatus for Beer and other Fluids invented by Gottlieb Schmidt. The patent was issued by the United States Patent Office on December 25, 1900. While the practical use is for pouring beer, this is the same principle that soda and other drink taps in bars and restaurants operate.
Patent prints allow you to have a piece of history in your home, office, man cave, geek den or anywhere you wish to add an interesting touch.
