407 U.S. 143 92 S.Ct. 1921 32 L.Ed.2d 612 Frederick E. ADAMS, Warden, Petitioner,v.Robert WILLIAMS. No. 70?283. Argued April 10, 1972. Decided June 12, 1972. Syllabus Acting on a tip supplied moments earlier by an informant known to him, a police officer asked respondent to open his car door. Respondent lowered the window, and the […]