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.
Cash back is a perk offered by many credit cards. Cash back refers to a partial reimbursement for the money you spend on your credit cardâusually 1% or soâand sometimes a higher percentage (2-5%) on certain purchases, like those made at restaurants, gas stations or other places.