$Parkervision(PRKR)$ 8-K - Current report Filed: 2019-03-14 AccNo: 0001398344-19-004814 Size: 393 KBItem 1.01: Entry into a Material Definitive AgreementItem 3.02: Unregistered Sales of Equity SecuritiesItem 9.01: Financial Statements and Exhibits 网页链接