Throughout its history, Connecticut frequently led all states in the average number of U. S. patents awarded per person. The list of products invented there is stunning--from the lollipop, cupcake and Frisbee, to the dirigible, helicopter and submarine. The workplace improved with tape measures, portable typewriters, postage meters and elevators. American consumers benefited from sewing machines, diapers, ironing boards, vacuum cleaners, can o...
CHF 33.90