A system (10) controls the dispensing of valuable commodities, such as beers. The system (10) includes a controller (36), sensors (26, 34), and solenoid-activated valves (24). The dispensing of a commodity begins when an operator identifies himself or herself to the controller (36) after selecting a...http://www.google.com/patents/US5988859?utm_source=gb-gplus-sharePatent US5988859 - Apparatus for dispensing valuable bulk commodities and method therefor
