Patent Parade


• For more complete information on any of the inventions shown here, you may order copies of each original patent by sending your request with the patent number to Commissioner of Patents. Department of Commerce, Washington 25, D. C.
Enclose 25c in cash for each patent.
Racing Booster Jets. These swivelling nozzles, jetting engine exhaust gas backward and laterally (opposing centrifugal force on curves) will boost racing-car power up to 10%, says the inventor. Patent No. 2,724,450, Reinhold G. Kamps, Stuttgart-Bad Cannstatt, Germany (Assignor to Daimler-Benz, A.G., Stuttgart-Unterturkheim, Germany).