The Multi-Phase Spring Motor Booklet by The Fuelless Motor Co.

This is an original vintage booklet titled "The Multi-Phase Spring Motor" published by The Fuelless Motor Co. out of Denver, Colorado. It's a fascinating piece of early 20th-century alternative energy history. The cover shows some age-related wear and light creasing, but it's still in solid shape for its age. Perfect for collectors of technical manuals or anyone interested in historical "fuelless" technology. Used.