PARKERVISION INChttps://pcaobus.org/form-ap-filings/22636/22636PARKERVISION INC226364/17/2018 2:50:08 PM2017c88f4313-27b2-4e7b-8bdd-2f143df14d02238PricewaterhouseCoopers LLP54680PARKERVISION INC914139PRKR0023800724Hillary Bourne Griffin0023800724True