Billings, Mont., businessman Michael W. Ryan has been sentenced to 71 months in prison and fined $100,000 for defrauding customers in a windshield replacement scheme. Ryan, the former owner of Thrifty Car Rental in Billings, also was ordered by U.S. District Judge Richard Cebull to pay $55,128 in restitution to insurance companies and individuals who were victimized in the scheme.