Lamarr and Anthiel received a patent in 1941, but the enormous significance of their invention was not realized until decades later. It was first implemented on naval ships during the Cuban Missile Crisis and subsequently emerged in numerous military applications.
Cash back credit card reward programs started out rather simply, offering a flat percentage rate (typically 1 percent of purchases) rebated back to the customer in the form of a check at the end of the year or a statement credit.
The Chase Freedom credit card lets you earn 5% cash back on up to $1,500 in combined purchases in bonus categories each quarter and unlimited 1% cash back on all other purchases.## Activating your 5% categories each quarter is free and easy. Cash back cards let you use your savings toward anything you like.